Association Fallacy: Difference between revisions

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{{tropeUseful Notes}}
[[File:Penguinlogic.jpg|thumb|350px]]
{{quote|''"'All wood burns,' states Sir Bedevere. 'Therefore,' he concludes, 'all that burns is wood.' This is, of course, pure bullshit. Universal affirmatives can only be partially converted: all of Alma Cogan is dead, but only some of the class of dead people are Alma Cogan."''|"A Lesson in Logic", ''[[Monty Python and the Holy Grail]] (Soundtrack from the Motion Picture)''}}
|"Logician" (track 9), ''The Album of the Soundtrack of the Trailer of the Film of [[Monty Python and the Holy Grail]]''}}
 
:: Claiming a quality of one thing is also a quality of another thing because they have some other thing in common, e.g. "Water is a liquid. Water will put out most fires. Therefore, any liquid will put out most fires." And then you pour on the olive oil. Or the high-proof vodka.
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* Sweeping Generalization
 
:: Guilt By Association assumes that two separate things share a negative factor because they share a different, unrelated factor. (See also [[Stop Being Stereotypical]], [[Don't Shoot the Message]])
 
{{examples}}
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Because Jesus is Good, Jesus only does and associates with Good things (again, [[Rule of Cautious Editing Judgment|there are flaws in the logic best left alone]])
Ergo, because alcohol is Bad, Jesus never partook of it. }}
::In order to make this work, any time wine is referenced in a positive context (for example, Jesus' first miracle), the word is instead rendered as "unfermented grape juice" when translated into English.
* ''[[Squid Girl]]'' has Cindy Campbell show off this fallacy in her first appearance: Squid Girl has tentacles; some aliens that Cindy has heard of have tentacles; therefore, Squid Girl is an alien. (Cindy also mentions that she graduated at the top of her class at MIT, but that's [[Appeal to Authority|a different logical fallacy]] in play.)
 
=== [[wikipedia:Reductio ad Hitlerum|Reductio ad Hitlerum]] ===
:: A very common form of Guilt by Association is "Hitler did it, therefore it's bad." While persuasive, it's not always true, since while Hitler did a lot of evil things, he also was a massive advocate of animal rights (well, definitely more so than Jewish, gay, or Gypsy rights...), built motorways, painted pictures, hosted the Olympics, [[Hitler Ate Sugar|ate sugar]], and breathed oxygen. This is related to the Fallacy of Division, since it assumes the evilness of the whole of Hitler also applies to any part of Hitler. Related to [[Godwin's Law]] and [[Hitler Ate Sugar]].
 
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== Honor by Association ==
:: The flip side of Guilt by Association, stating that two things share a positive quality because they share a different, unrelated quality.
 
:: The flip side of Guilt by Association, stating that two things share a positive quality because they share a different, unrelated quality.
 
{{examples}}
=== New Media ===
* One Usenet poster who claims "we should all become vegetarian" claims in his sig that "Jesus was a vegetarian". His reasoning: vegetarianism is good; Jesus was good; therefore Jesus must have been a vegetarian. Which assumes that vegetarianism is "Good" by all standards and values of those who hold that Jesus Christ was good '''and''' that Jesus is believed to be "Good" by everyone.
** Other people use a somewhat more complicated, but just as fallacious version of this argument: Because Jesus's teachings and behaviors were most in line with the Essene sect, Jesus must have been an Essene, and because the Essenes were mostly vegetarian (pescatarian, actually, but they leave out that part), Jesus must have been vegetarian and because Jesus is good, the vegetarianism is good and would therefore hate killing animals as much as they do. (Never mind that the Essenes weren't vegetarian out of compassion for animals, but rather because they believed anything created from sexual union was treif, but that fish spawned via abiogenesis in the waters and were therefore kosher. Of course that part gets left out, too.)
** Some sects of Christianity that preach teetotalitarianism apply a similar fallacy to alcohol. They feel alcohol is bad, and Jesus was purest good, so he naturally would not have done anything bad. Therefore he would not have partaken of alcohol. Therefore, the same word is translated as "unfermented grape juice" in instances where it's being partaken of or otherwise addressed positively, and "wine" when speaking against the dangers of excessive drinking in their editions of the Bible. This is pretty much entirely nonsensical; grape skins are coated in yeast, and therefore keeping grape juice from fermenting with period technology is impossible. You pretty much had to own a vineyard to get fresh grape juice in those days, as the alcohol produced by fermentation was necessary to prevent spoilage.<ref>There is one occasion where the change fits; at the party, when Jesus turns water into wine. One of the guests comments on what good wine it is, but it suddenly becomes even more impressive if he's gone to the trouble and expense of getting fresh-squeezed grape juice.</ref>
=== Video Games ===
* ''[[Metal Gear Solid|Otacon]]'': Otacon states matter of factly that liking dogs is irrefutable proof that a person is decent, deep down. Snake immediately points out that Hitler was a big fan of dogs. Interesting in that while it applies under this variant, the exchange is often mistaken for an example of the Argumentum Ad Hitlerium fallacy. But Snake isn't saying liking dogs is bad; he's just shooting down Otacon's fallacy by pointing out a bad person who liked dogs.
=== Web Comics ===
* Agatha lampshades and rebuts this fallacy in [http://www.girlgeniusonline.com/comic.php?date=20200406 this] ''[[Girl Genius]]'' strip.
 
=== Looks like this fallacy but is not ===
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[[Category:Logical Fallacies]]
[[Category:Association Fallacy]]
[[Category:Examples Need Sorting]]