<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3051%3A_Hardwood</id>
		<title>3051: Hardwood - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3051%3A_Hardwood"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;action=history"/>
		<updated>2026-05-23T03:33:00Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=412186&amp;oldid=prev</id>
		<title>FaviFake: given the proposal made at the community portal, i'm merging Blondie and Miss Lenhart, just like Cutie and Megan</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=412186&amp;oldid=prev"/>
				<updated>2026-05-09T15:39:24Z</updated>
		
		<summary type="html">&lt;p&gt;given the proposal made at the community portal, i&amp;#039;m merging &lt;a href=&quot;/wiki/index.php/Blondie&quot; class=&quot;mw-redirect&quot; title=&quot;Blondie&quot;&gt;Blondie&lt;/a&gt; and &lt;a href=&quot;/wiki/index.php/Miss_Lenhart&quot; title=&quot;Miss Lenhart&quot;&gt;Miss Lenhart&lt;/a&gt;, just like &lt;a href=&quot;/wiki/index.php/Cutie&quot; class=&quot;mw-redirect&quot; title=&quot;Cutie&quot;&gt;Cutie&lt;/a&gt; and &lt;a href=&quot;/wiki/index.php/Megan&quot; title=&quot;Megan&quot;&gt;Megan&lt;/a&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:39, 9 May 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l12&quot; &gt;Line 12:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 12:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Blondie&lt;/del&gt;]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}}, rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Miss Lenhart&lt;/ins&gt;]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}}, rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Cueball is looking down and pointing with a finger towards the floor in front of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Blondie &lt;/del&gt;who is facing him. Behind her is a picture on the wall showing seven sedimentary layers above each other, assuming the top of the picture is air. Each layer has a different texture than the ones it borders but two are as white as the air at the top, including the bottom-most layer.]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Cueball is looking down and pointing with a finger towards the floor in front of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Miss Lenhart &lt;/ins&gt;who is facing him. Behind her is a picture on the wall showing seven sedimentary layers above each other, assuming the top of the picture is air. Each layer has a different texture than the ones it borders but two are as white as the air at the top, including the bottom-most layer.]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:Cueball: So you're saying that if we tear up these layers, there's hardwood flooring under here?&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:Cueball: So you're saying that if we tear up these layers, there's hardwood flooring under here?&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Blondie&lt;/del&gt;: ...I mean, sort of...&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Miss Lenhart&lt;/ins&gt;: ...I mean, sort of...&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Caption below the panel:]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Caption below the panel:]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l29&quot; &gt;Line 29:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 29:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Comics featuring Cueball]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Comics featuring Cueball]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Comics featuring &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Blondie&lt;/del&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Comics featuring &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Miss Lenhart&lt;/ins&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Geology]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Geology]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>FaviFake</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=371013&amp;oldid=prev</id>
		<title>Kynde: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=371013&amp;oldid=prev"/>
				<updated>2025-04-01T11:31:29Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 11:31, 1 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The idea of using geology in relation to houses is also used the [[:Category:Home Inspections|Home Inspections]] series and in [[3070: Orogeny]], all released relatively close to each other.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Kynde</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=367111&amp;oldid=prev</id>
		<title>108.162.245.246: /* Explanation */ not relevant</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=367111&amp;oldid=prev"/>
				<updated>2025-02-27T04:44:11Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; not relevant&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 04:44, 27 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://www.explainxkcd.com/wiki/index.php/Category:Geology Geology]-themed comics appear in xkcd with increasing frequency, with 19 of the 51 comics in the category published since the beginning of 2023.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>108.162.245.246</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366207&amp;oldid=prev</id>
		<title>B for brain: /* Explanation */ Removed Incomplete tag</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366207&amp;oldid=prev"/>
				<updated>2025-02-21T17:38:02Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; Removed Incomplete tag&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:38, 21 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot; &gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{incomplete|Created by a DIRT FLOOR INSTALLER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>B for brain</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366016&amp;oldid=prev</id>
		<title>141.101.99.93: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366016&amp;oldid=prev"/>
				<updated>2025-02-18T09:14:19Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:14, 18 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot; &gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[Blondie]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}} rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[Blondie]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}}&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that typical {{w|Carboniferous#Plants|Carboniferous plants}} would all be classified as {{w|Softwood|softwoods}} or even not woody at all; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of today's {{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is now “hardwood” in the literal sense of wood that is hard, as it is now all coal and other rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>141.101.99.93</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366015&amp;oldid=prev</id>
		<title>172.71.178.74: /* Explanation */ Remove duplication</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=366015&amp;oldid=prev"/>
				<updated>2025-02-18T09:13:36Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; Remove duplication&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:13, 18 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a DIRT FLOOR INSTALLER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a DIRT FLOOR INSTALLER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor&lt;/del&gt;. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[Blondie]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}} rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic [[Blondie]] has apparently explained {{w|Stratum|geological strata}} to [[Cueball]], who refers to finding a “hardwood floor” under these layers. The joke is that the characters are talking about the {{w|Earth's crust}} rather than about a house.&amp;#160; The “hardwood floor” is actually a {{w|Fossil fuel|fossiliferous}} {{w|Coal|coal seam}} from the {{w|Carboniferous}} period, 300-360 million years ago, that originated as woody plants and other material. The “layers” are overlying geological strata that are likely hundreds or thousands of meters thick, making it impractical, if not impossible, to tear them up, and making it unlikely that there is any aesthetic reason to expose the “hardwood” layer.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.71.178.74</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365980&amp;oldid=prev</id>
		<title>DKMell: lots of minor updates</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365980&amp;oldid=prev"/>
				<updated>2025-02-17T20:55:38Z</updated>
		
		<summary type="html">&lt;p&gt;lots of minor updates&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 20:55, 17 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot; &gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Cueball &lt;/del&gt;has &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;learned about &lt;/del&gt;geological strata &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and &lt;/del&gt;refers to finding a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;hardwood floor &lt;/del&gt;under these layers. The joke is that the characters are talking about the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;earth’s &lt;/del&gt;crust&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/del&gt;rather than about a house.&amp;#160; The &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;‘hardwood floor' &lt;/del&gt;is actually a fossiliferous coal seam from {{w|Carboniferous&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;|&lt;/del&gt;300-&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;350 &lt;/del&gt;million years &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;before present}} &lt;/del&gt;that originated as plants and other &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;woody &lt;/del&gt;material. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt; &lt;/del&gt;The “layers” are &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;subsequent &lt;/del&gt;geological strata, making it impractical, if not impossible, to tear them up&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. (Additionally&lt;/del&gt;, there is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;unlikely to be &lt;/del&gt;any aesthetic reason to expose the “hardwood” layer&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;)&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;[[Blondie]] &lt;/ins&gt;has &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;apparently explained {{w|Stratum|&lt;/ins&gt;geological strata&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} to [[Cueball]], who &lt;/ins&gt;refers to finding a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;“hardwood floor” &lt;/ins&gt;under these layers. The joke is that the characters are talking about the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|Earth's &lt;/ins&gt;crust&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} &lt;/ins&gt;rather than about a house.&amp;#160; The &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;“hardwood floor” &lt;/ins&gt;is actually a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|Fossil fuel|&lt;/ins&gt;fossiliferous&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} {{w|Coal|&lt;/ins&gt;coal seam&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} &lt;/ins&gt;from &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the &lt;/ins&gt;{{w|Carboniferous&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} period, &lt;/ins&gt;300-&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;360 &lt;/ins&gt;million years &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;ago, &lt;/ins&gt;that originated as &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;woody &lt;/ins&gt;plants and other material. The “layers” are &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;overlying &lt;/ins&gt;geological strata &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;that are likely hundreds or thousands of meters thick&lt;/ins&gt;, making it impractical, if not impossible, to tear them up, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and making it unlikely that &lt;/ins&gt;there is any aesthetic reason to expose the “hardwood” layer&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the &lt;/del&gt;{{w|Carboniferous#Plants|plants}} &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;typical of the Carboniferous period of Earth's history &lt;/del&gt;would all be classified as {{w|Softwood|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;softwoods&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;}} at &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;best&lt;/del&gt;; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;{{w|hardwoods}}&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;hardwood &lt;/del&gt;in the literal sense of wood that is hard, as it is now all coal and rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;typical &lt;/ins&gt;{{w|Carboniferous#Plants|&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Carboniferous &lt;/ins&gt;plants}} would all be classified as {{w|Softwood|softwoods}} &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;or even not woody &lt;/ins&gt;at &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;all&lt;/ins&gt;; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;today's &lt;/ins&gt;{{w|hardwoods}}, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;now “hardwood” &lt;/ins&gt;in the literal sense of wood that is hard, as it is now all coal and &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;other &lt;/ins&gt;rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://www.explainxkcd.com/wiki/index.php/Category:Geology Geology]-themed comics appear in xkcd with increasing frequency, with 19 of the 51 comics in the category published since the beginning of 2023.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://www.explainxkcd.com/wiki/index.php/Category:Geology Geology]-themed comics appear in xkcd with increasing frequency, with 19 of the 51 comics in the category published since the beginning of 2023.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DKMell</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365946&amp;oldid=prev</id>
		<title>108.162.241.161: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365946&amp;oldid=prev"/>
				<updated>2025-02-17T06:01:17Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 06:01, 17 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot; &gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned about geological strata and refers to finding a hardwood floor under these layers. The joke is that the characters are talking about the earth’s crust, rather than about a house.&amp;#160; The ‘hardwood floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material.&amp;#160; The “layers” are subsequent geological strata, making it impractical, if not impossible, to tear them up. (Additionally, there is unlikely to be any &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;ascetic &lt;/del&gt;reason to expose the “hardwood” layer)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned about geological strata and refers to finding a hardwood floor under these layers. The joke is that the characters are talking about the earth’s crust, rather than about a house.&amp;#160; The ‘hardwood floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material.&amp;#160; The “layers” are subsequent geological strata, making it impractical, if not impossible, to tear them up. (Additionally, there is unlikely to be any &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;aesthetic &lt;/ins&gt;reason to expose the “hardwood” layer)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that the {{w|Carboniferous#Plants|plants}} typical of the Carboniferous period of Earth's history would all be classified as {{w|Softwood|&amp;quot;softwoods&amp;quot;}} at best; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &amp;quot;{{w|hardwoods}}&amp;quot;, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is hardwood in the literal sense of wood that is hard, as it is now all coal and rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that the {{w|Carboniferous#Plants|plants}} typical of the Carboniferous period of Earth's history would all be classified as {{w|Softwood|&amp;quot;softwoods&amp;quot;}} at best; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &amp;quot;{{w|hardwoods}}&amp;quot;, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is hardwood in the literal sense of wood that is hard, as it is now all coal and rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>108.162.241.161</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365945&amp;oldid=prev</id>
		<title>Bertrc: /* Explanation */ they are not discussing remodeling a house.  They are applying house remodeling ideas to the earth’s crust</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365945&amp;oldid=prev"/>
				<updated>2025-02-17T05:28:54Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; they are not discussing remodeling a house.  They are applying house remodeling ideas to the earth’s crust&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 05:28, 17 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot; &gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are currently considered desirable in homes for durability, aesthetic appeal and other reasons, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;that there is &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;layer of 'technically &lt;/del&gt;hardwood&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;' &lt;/del&gt;under &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;whatever flooring is currently installed&lt;/del&gt;. The joke is that the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;'hardwood &lt;/del&gt;floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;This 'floor' probably lies &lt;/del&gt; &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;dozens or hundreds of meters below the foundation of the house&lt;/del&gt;, making it impractical, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and probably prohibitively expensive&lt;/del&gt;, to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;reach&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;especially in &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;context of a 'normal' home remodeling project.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;about geological strata and refers to finding &lt;/ins&gt;a hardwood &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;floor &lt;/ins&gt;under &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;these layers&lt;/ins&gt;. The joke is that the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;characters are talking about the earth’s crust, rather than about a house.&amp;#160; The ‘hardwood &lt;/ins&gt;floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material.&amp;#160; &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;The “layers” are subsequent geological strata&lt;/ins&gt;, making it impractical, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;if not impossible&lt;/ins&gt;, to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;tear them up. (Additionally&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;there is unlikely to be any ascetic reason to expose &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;“hardwood” layer)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that the {{w|Carboniferous#Plants|plants}} typical of the Carboniferous period of Earth's history would all be classified as {{w|Softwood|&amp;quot;softwoods&amp;quot;}} at best; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &amp;quot;{{w|hardwoods}}&amp;quot;, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is hardwood in the literal sense of wood that is hard, as it is now all coal and rock.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text refers to the fact that the {{w|Carboniferous#Plants|plants}} typical of the Carboniferous period of Earth's history would all be classified as {{w|Softwood|&amp;quot;softwoods&amp;quot;}} at best; flowering plants ({{w|Flowering plants|angiosperms}}), the principal source of &amp;quot;{{w|hardwoods}}&amp;quot;, would not appear on Earth in any significant numbers for another 220 million years. However, whatever it would be classified as in the beginning, it is hardwood in the literal sense of wood that is hard, as it is now all coal and rock.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Bertrc</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365925&amp;oldid=prev</id>
		<title>172.70.58.5: /* Explanation */ Adding more about the carpet and 'lino' options that might have obscured (but not replaced) the now more retro-desirable choice.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3051:_Hardwood&amp;diff=365925&amp;oldid=prev"/>
				<updated>2025-02-16T15:41:22Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; Adding more about the carpet and &amp;#039;lino&amp;#039; options that might have obscured (but not replaced) the now more retro-desirable choice.&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:41, 16 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a DIRT FLOOR INSTALLER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a DIRT FLOOR INSTALLER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are considered desirable in homes for durability, aesthetic appeal and other reasons. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Home remodelers, whether contractors or do-it-yourselfers, sometimes seek to remove layers of modifications to restore some previous condition. An example is to remove carpeting or other covering to restore an earlier, perhaps original, floor. Flooring made of hardwood (oak, maple, etc.) panels, perhaps deprecated by earlier homeowners for comfort or style reasons, can be prized by later homeowners as tastes or fashions change. Hardwood floors are &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;currently &lt;/ins&gt;considered desirable in homes for durability, aesthetic appeal and other reasons&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, and may have been the original choice for the building, but aspirations constantly change and intermediate decoration may have overlaid carpetting or {{w|linoleum}}/{{w|Sheet vinyl flooring|vinyl}} at a time that this was considered more fashionable or practical&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned that there is a layer of 'technically hardwood' under whatever flooring is currently installed. The joke is that the 'hardwood floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material. This 'floor' probably lies&amp;#160; dozens or hundreds of meters below the foundation of the house, making it impractical, and probably prohibitively expensive, to reach, especially in the context of a 'normal' home remodeling project.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In this comic Cueball has learned that there is a layer of 'technically hardwood' under whatever flooring is currently installed. The joke is that the 'hardwood floor' is actually a fossiliferous coal seam from {{w|Carboniferous|300-350 million years before present}} that originated as plants and other woody material. This 'floor' probably lies&amp;#160; dozens or hundreds of meters below the foundation of the house, making it impractical, and probably prohibitively expensive, to reach, especially in the context of a 'normal' home remodeling project.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.70.58.5</name></author>	</entry>

	</feed>