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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=2422%3A_Vaccine_Ordering</id>
		<title>2422: Vaccine Ordering - 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=2422%3A_Vaccine_Ordering"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;action=history"/>
		<updated>2026-05-23T10:14:21Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=389153&amp;oldid=prev</id>
		<title>Not without text: simpler example given</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=389153&amp;oldid=prev"/>
				<updated>2025-10-20T16:14:50Z</updated>
		
		<summary type="html">&lt;p&gt;simpler example given&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 16:14, 20 October 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-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Cueball wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey. Two equally ridiculous rhymes could be “Pfizer before Moderna&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, you’ll have a &lt;/del&gt;broken {{w|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Xiphoid process&lt;/del&gt;|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;xiphisterna&lt;/del&gt;}} (plural of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;xiphisterum, or the xiphoid, a small triangular extension of the &lt;/del&gt;sternum)” or “Pfizer before Moderna, you’ll be attacked by sharks of genus {{w|Sphyrna}} (a hammerhead shark)”. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;(&lt;/del&gt;In a nonrhotic accent, however, you could rhyme it much more sensibly with &amp;quot;burner&amp;quot;, &amp;quot;turner&amp;quot;, or &amp;quot;learner&amp;quot;.&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;Cueball wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey. Two equally ridiculous rhymes could be “Pfizer before Moderna &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;leads to &lt;/ins&gt;broken {{w|&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Sternum&lt;/ins&gt;|&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;sterna&lt;/ins&gt;}} (plural of sternum)” or “Pfizer before Moderna, you’ll be attacked by sharks of genus {{w|Sphyrna}} (a hammerhead shark)”. In a nonrhotic accent, however, you could rhyme it much more sensibly with &amp;quot;burner&amp;quot;, &amp;quot;turner&amp;quot;, or &amp;quot;learner&amp;quot;.&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Not without text</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=389152&amp;oldid=prev</id>
		<title>Not without text at 16:09, 20 October 2025</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=389152&amp;oldid=prev"/>
				<updated>2025-10-20T16:09:17Z</updated>
		
		<summary type="html">&lt;p&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 16:09, 20 October 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-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Cueball wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey. Two equally ridiculous rhymes could be “Pfizer before Moderna, you’ll have a broken {{w|Xiphoid process|xiphisterna}} (plural of xiphisterum, or the xiphoid, a small triangular extension of the sternum)” or “Pfizer before Moderna, you’ll be attacked by sharks of genus {{w|Sphyrna}} (a hammerhead shark)”.&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 wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey. Two equally ridiculous rhymes could be “Pfizer before Moderna, you’ll have a broken {{w|Xiphoid process|xiphisterna}} (plural of xiphisterum, or the xiphoid, a small triangular extension of the sternum)” or “Pfizer before Moderna, you’ll be attacked by sharks of genus {{w|Sphyrna}} (a hammerhead shark)”. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;(In a nonrhotic accent, however, you could rhyme it much more sensibly with &amp;quot;burner&amp;quot;, &amp;quot;turner&amp;quot;, or &amp;quot;learner&amp;quot;.)&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Not without text</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=353905&amp;oldid=prev</id>
		<title>42.book.addict at 22:45, 23 October 2024</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=353905&amp;oldid=prev"/>
				<updated>2024-10-23T22:45:43Z</updated>
		
		<summary type="html">&lt;p&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;
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				&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 22:45, 23 October 2024&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-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Megan is reading an article on her phone to Cueball. A report from the {{w|Centers for Disease Control and Prevention|CDC}} says that it's possible to get effective immunity against {{w|COVID-19}} when mixing {{w|RNA vaccine|mRNA vaccine doses}} from Pfizer and Moderna, but that this practice should not be the norm. The report in question can be viewed [https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html here]; it stresses that mixing the vaccines is acceptable only in exceptional circumstances, such as &amp;quot;when the first-dose vaccine product cannot be determined.&amp;quot;&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;Cueball wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey.&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 wonders whether the order in which you receive the vaccines matters. Megan then attempts to create {{w|Mnemonic|mnemonic devices}} to help them remember which mix-and-match strategy is best for the mRNA vaccines (e.g., &amp;quot;Beer before wine and you'll feel fine; wine before beer and you'll feel queer&amp;quot;). She &amp;quot;concludes&amp;quot; that receiving the Pfizer vaccine after the Moderna one will be just as effective as having two doses of either, but that having the Moderna vaccine after Pfizer's will lead to the patient becoming the ruler of an ancient city. Megan might mean that the patient will be literally transported back in time, as she and Cueball (and [[Black Hat]]) were in [[2321: Low-Background Metal]].&amp;#160; The apparent {{w|truthiness}} of these mnemonics might be attributed to the {{w|rhyme-as-reason_effect|rhyme-as-reason effect}}, a cognitive bias that is often misleading - very much so in this case. Megan succeeds by rhyming &amp;quot;Pfizer&amp;quot; and &amp;quot;wiser,&amp;quot; but struggles with finding a rhyme for &amp;quot;Moderna,&amp;quot; settling for {{w|Smyrna}}, an ancient city located in what is now {{w|Izmir}}, Turkey&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. Two equally ridiculous rhymes could be “Pfizer before Moderna, you’ll have a broken {{w|Xiphoid process|xiphisterna}} (plural of xiphisterum, or the xiphoid, a small triangular extension of the sternum)” or “Pfizer before Moderna, you’ll be attacked by sharks of genus {{w|Sphyrna}} (a hammerhead shark)”&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&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;A {{w|side effect}} of a drug is an effect incidental to the intended purpose of the drug. Side effects can be positive or negative, though in vaccine trials the greater concern is usually about negative side effects. Becoming ruler of an ancient city that is now only a historical ruin would certainly be an unexpected side effect.{{Citation needed}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>42.book.addict</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=267201&amp;oldid=prev</id>
		<title>162.158.146.175: Undo revision 267107 by 👖🔥 (talk)</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=267201&amp;oldid=prev"/>
				<updated>2022-05-11T18:07:00Z</updated>
		
		<summary type="html">&lt;p&gt;Undo revision 267107 by &lt;a href=&quot;/wiki/index.php/Special:Contributions/%F0%9F%91%96%F0%9F%94%A5&quot; title=&quot;Special:Contributions/👖🔥&quot;&gt;👖🔥&lt;/a&gt; (&lt;a href=&quot;/wiki/index.php?title=User_talk:%F0%9F%91%96%F0%9F%94%A5&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;User talk:👖🔥 (page does not exist)&quot;&gt;talk&lt;/a&gt;)&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=267201&amp;amp;oldid=267107&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>162.158.146.175</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=267107&amp;oldid=prev</id>
		<title>👖🔥 at 17:56, 11 May 2022</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=267107&amp;oldid=prev"/>
				<updated>2022-05-11T17:56:31Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=267107&amp;amp;oldid=262135&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>👖🔥</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=262135&amp;oldid=prev</id>
		<title>Jacky720: rv</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=262135&amp;oldid=prev"/>
				<updated>2022-05-04T23:46:56Z</updated>
		
		<summary type="html">&lt;p&gt;rv&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=262135&amp;amp;oldid=262112&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>Jacky720</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=262112&amp;oldid=prev</id>
		<title>Ex Kay Cee Dee at 23:46, 4 May 2022</title>
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				<updated>2022-05-04T23:46:53Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=262112&amp;amp;oldid=246636&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>Ex Kay Cee Dee</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=246636&amp;oldid=prev</id>
		<title>Jacky720: rv</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=246636&amp;oldid=prev"/>
				<updated>2022-05-04T21:06:54Z</updated>
		
		<summary type="html">&lt;p&gt;rv&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=246636&amp;amp;oldid=243066&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>Jacky720</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=243066&amp;oldid=prev</id>
		<title>Ex Kay Cee Dee at 20:25, 4 May 2022</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=243066&amp;oldid=prev"/>
				<updated>2022-05-04T20:25:08Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=243066&amp;amp;oldid=239050&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>Ex Kay Cee Dee</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;diff=239050&amp;oldid=prev</id>
		<title>Davidy22: Reverted edits by X. K. C. D. (talk) to last revision by Jkshapiro</title>
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				<updated>2022-05-04T02:08:26Z</updated>
		
		<summary type="html">&lt;p&gt;Reverted edits by &lt;a href=&quot;/wiki/index.php/Special:Contributions/X._K._C._D.&quot; title=&quot;Special:Contributions/X. K. C. D.&quot;&gt;X. K. C. D.&lt;/a&gt; (&lt;a href=&quot;/wiki/index.php?title=User_talk:X._K._C._D.&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;User talk:X. K. C. D. (page does not exist)&quot;&gt;talk&lt;/a&gt;) to last revision by &lt;a href=&quot;/wiki/index.php/User:Jkshapiro&quot; title=&quot;User:Jkshapiro&quot;&gt;Jkshapiro&lt;/a&gt;&lt;/p&gt;
&lt;a href=&quot;//www.explainxkcd.com/wiki/index.php?title=2422:_Vaccine_Ordering&amp;amp;diff=239050&amp;amp;oldid=235017&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>Davidy22</name></author>	</entry>

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