2098: Magnetic Pole

2019-01-20T16:46:13Z

Giraffedata: copy edit

{{comic
| number = 2098
| date = January 14, 2019
| title = Magnetic Pole
| image = magnetic_pole.png
| titletext = People keep trying to come up with reasons that we should worry about the magnetic field collapsing or reversing, but honestly I think it's fine. Whatever minor problems it causes will be made up for by the mid-latitude auroras.
}}

==Explanation==
{{incomplete|Created by a CONVECTION CURRENT IN THE OUTER CORE and a thing happening. Well, four things. Well, four things and a lizard. And a toad. And a potato battery. Include relevant wikipedia and news article links. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

Over the last couple of months, {{w|Earth's magnetic field|Earth's magnetic fields}} have been [https://www.nature.com/articles/d41586-019-00007-1 shifting rapidly]. Although the magnetic fields do move regularly, the current shift has been unexpected and unprecedented. As many location systems are reliant on the magnetic fields to function, the accuracy of such tools is being shifted beyond the maximum acceptable error.

Locational and navigational systems use the magnetic field, combined with a model of field behavior, to do fancy math and pop out data. Because of the rapid shifts, a new model was scheduled to be created; however, the model has been considerably delayed by the {{w|United States federal government shutdown of 2018–2019|US government shutdown}},

As shifts occur, the error of geopositional data will increase until a new {{w|World Magnetic Model|model}} is released. The effect is especially pronounced as you move toward the poles.

Cueball is saying that because of the currently published {{w|magnetic declination}} data being slightly incorrect, his {{w|Schooner|schooners}} (old merchant sailing ships) may go off-course and crash on {{w|Shoal|shoals}}. This is to illustrate how magnetic pole shift doesn't actually affect many people's daily lives. Modern ships' navigation systems do not rely on magnetic pole location – in contrast to old vessels which mostly used a {{w|compass}}.

Since the movement is only about two-fifths of a degree, it wouldn't cause much disruption for [[Cueball]] or require him to adjust anything about his lifestyle, but since the speed of the change has been steadily increasing over the past few years, it may mean we are heading for a geomagnetic reversal in the next few decades, something very exciting indeed. During a magnetic reversal, the poles wouldn't just switch places; several different poles would form and interact chaotically, and it's likely that one of them would end up close enough to where [[Randall]] lives to cause auroras to become more common at some point during the transition.

In the title text, Randall mentions that there are reasons people could be concerned, but says that they would be more than made up for by newly being able to experience mid latitude auroras.

==Transcript==
:[White Hat and Cueball are talking to each other. White Hat has a cellphone in his hand, while Cueball is raising his hands in the air in mock exasperation.]
:White Hat: I just read that the Earth's North magnetic pole is drifting rapidly.
:Cueball: Oh no! I must update our declination tables post haste, lest our merchant schooners run aground on the shoals!

:[Caption below the panel:]
:I like when the Earth's magnetic field does weird stuff, because it's a huge, cool, urgent-seeming science thing, but there's nothing I personally need to do about it.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]

2099: Missal of Silos

2019-01-20T16:35:05Z

Giraffedata: due works better as an adjective

{{comic
| number = 2099
| date = January 16, 2019
| title = Missal of Silos
| image = missal_of_silos.png
| titletext = Welcome to Wyoming, motto "We'd like to clarify that Cheyenne Mountain is in Colorado."
}}

==Explanation==
{{incomplete|Cremated by a BOB. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

This comic plays on the similarity in name between missile silos, places where long range weapons are deployed, and the missal of Silos, an old document residing in Spain.

In Christianity, a {{w|missal}} is a priest's book of instructions, texts and music for the proper celebration of {{w|Mass (liturgy)|Mass}}. The Missal of Silos is an 11th-century missal from the {{w|Abbey of Santo Domingo de Silos}} in northern {{w|Spain}}; it is famous for being the oldest known {{w|paper}} document in Europe, written at a time when the usual writing material was {{w|parchment}}.

{{w|Missile silos}} are often thought to be the first targeting priority in event of a nuclear strike, in hopes of preventing retaliation. If one was searching for potential nuclear missile targets, the {{w|Missal of Silos}} would most likely be returned as a result of a fuzzy search for "missile silos", and could be made a target.

{{w|Approximate string matching|Fuzzy, or approximate, string matching}} is a technique used for searching text for sequences of characters similar to a given sequence. Normal string matching would only find results that matched the search exactly (searching for "''missile''" would find only occurrences of "''missile''"). Fuzzy string matching instead finds results that are "close enough" by some metric (searching for "''missile''" would find "''missile''" but also close variants like "''missal''" or "''missel''"). Fuzzy string matching is often used in search engines, as typos, misspellings, and inexact searches are common.

{{w|Cheyenne Mountain}} is a mountain in {{w|Colorado}}, which houses an underground military compound (aptly named the {{w|Cheyenne Mountain Complex}}) designed to withstand a nuclear strike and host to the {{w|North American Aerospace Defense Command}}. {{w|Cheyenne, Wyoming}}, on the other hand, is the capital of {{w|Wyoming}}. The residents of Cheyenne, Wyoming would prefer their town not to be the target of a nuclear attack because of confusion with Cheyenne Mountain. However, Cheyenne, Wyoming is likely a listed target because of the nearby {{w|90th Operations Group}} at {{w|Francis E. Warren Air Force Base}} operating Minuteman III ICBMs from missile silos.

There have been several comics with nuclear weapons as a part of the plot. See for instance [[1655: Doomsday Clock]], where several other comics are mentioned in the explanation.

==Transcript==
:[A passage from the Wikipedia page for Missal of Silos is shown, with underlined heading and with links in the text in blue font. The last line is partly cut off by the comics panel, but can be read.]
:<big>'''Missal of Silos'''</big>
:<div style="border-bottom: 1px solid #bbbbbb"></div>
:<small>From Wikipedia, the free encyclopedia</small>
:The {{w|Missal}} of Silos is the oldest known {{w|paper}} document created in the Christian West; it is 11th century in date.<sup><span style="color: #0645AD">[1]</span></sup>
:The missal is held in the library of the {{w|Monastery of Santo Domingo de Silos}} near {{w|Burgos, Spain}}. It is one of a number of liturgical manuscripts...

:[Caption below the panel:]
:Spain would like to remind everyone not to use fuzzy string matching in their nuclear strike target lists.

==Trivia==
*The transcript of the Wikipedia article shown on the comic is accurate to the [https://en.wikipedia.org/w/index.php?title=Missal_of_Silos&oldid=857775302 revision made on 2 September 2018].
**This is because a spurt of editing took place on Wikipedia on the day of the comic, since xkcd and Wikipedia editing have similar target demographics.
**This "xkcd-Wikipedia effect" has happened before.
***One example of this revolved around [[878: Model Rail]], in which the alt-text mentioned that the debate over the title of the HO/H0 system was disturbingly long, and "coincidentally", the talk page debate got a little longer on that very day.
***And most famously, the comic [[1485: Friendship]], caused at least four Wikipedia pages to be vandalized, so these pages had to be semi protected.
***Of course, the canonical example of an "xkcd-Wikipedia effect" is [[739: Malamanteau]]. [https://xkcd.com/739/] [https://en.wikipedia.org/wiki/Talk:Malamanteau]
{{comic discussion}}

[[Category:Wikipedia]]
[[Category:Comics with color]]

explain xkcd - User contributions [en]

2098: Magnetic Pole

2099: Missal of Silos