History Main / FallacyOfComposition

21st Nov '17 8:53:13 AM garthvader
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* Alternative health claims are rife with these. The claimants will say that X is in a drug/food/compound, and therefore that the substance is healthful/unhealthful. For example, one fad claims that Splenda is toxic because it contains the element chlorine. It does. So does table salt. That's a classic example of this fallacy. A less unreasonable claim is that chloro-carbons (like Splenda) are unhealthful, while ionic chlorine (such as salt) is fine. This claim does not run afoul of this fallacy, though "Splenda is toxic at any reasonable dose" is not accepted by mainstream evidence-based medical practitioners. Food additives go through extensive toxicity testing before approval.

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* Alternative health claims are rife with these. The claimants will say that X is in a drug/food/compound, and therefore that the substance is healthful/unhealthful. For example, one fad claims that Splenda is toxic because it contains the element chlorine. It does. So does table salt. That's a classic example of this fallacy. A less unreasonable claim Another is that chloro-carbons (like Splenda) are unhealthful, while ionic chlorine (such to list all the side-effects a medicine ''can'' have as salt) is fine. This claim does not run afoul of this fallacy, though "Splenda is toxic at any reasonable dose" if it ''will'' have those side effects, even if it is not accepted by mainstream evidence-based medical practitioners. Food additives go through extensive toxicity testing before approval.even being administered in a way where they could possibly manifest.
21st Nov '17 8:49:42 AM garthvader
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** Some trick questions go even further and make the feathers the right answer, by using different measures of weight.
*** One memorable variant uses the word "pound", then goes on to discuss the economic trends of the United Kingdom.



** The same is true of word filters: written erotica may mention breasts, but blocking all uses of the word blocks out gynaecology, chicken recipes, and other innocent uses. The "ScunthorpeProblem" nets even more collateral blocking (while the devious perverts just use word-substitution tricks).
21st Nov '17 8:46:11 AM garthvader
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*** A pound of gold weighs less than a pound of feathers because gold is measured in troy weight.
20th Nov '17 8:07:27 AM garthvader
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A type of generalisation fallacy. Inverse of the FallacyOfDivision, where it is argued that the parts must inherit traits from the whole.
20th Nov '17 8:06:31 AM garthvader
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* One common strategy in politics is to hold up extreme members of a group as typical of the whole. For example, "Bob went to your rally and is a Nazi, so everyone at your rally must be Nazis."
23rd Mar '17 2:34:38 PM Josef5678
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[[AC: WebOriginal]]

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23rd Mar '17 10:18:12 AM ironballs16
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\n* ''{{WesternAnimation/Metalocalypse}}'' gives us this gem.
-->'''Nathan''': [[https://youtu.be/eqbn7oxXh38 Bleach is healthy, it's mostly water]]. And ''we're'' mostly water. Therefore, we are bleach.

20th Mar '17 3:32:47 PM StarTropes
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[[AC:StandUpComedy]]
* Creator/JimGaffigan points out how this doesn't make sense while explaining how EveryoneHatesFruitCakes.
--> "Fruit: good; cake: great; fruit cake: nasty crap."
17th Mar '17 7:16:19 AM Fighteer
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[[AC:FanFic]]
* This trope can be a result of AuthorAppeal. For example: ''Literature/HarryPotter'' is awesome. {{Goth}}s are awesome. Therefore [[Fanfic/MyImmortal a fanfic which combines them]] should be awesome.[[note]]FromACertainPointOfView, of course, said fic is ''totally awesome.''[[/note]]
23rd Dec '16 7:32:35 AM Gosicrystal
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** Of course, it is equally fallacious to claim that any single instance of unseasonably warm--or unseasonably cool--weather anywhere, at any time, is evidence of global warming or climate change.

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** Of course, it is equally fallacious to claim that any single instance of unseasonably warm--or unseasonably cool--weather anywhere, at any time, is evidence of global warming or climate change.change.
* The ubiquitous argument "If the president of this corporation is [[CorruptCorporateExecutive corrupt]], then the whole corp is playing dirty". Believed by the masses when the higher ups are investigated or tried for any crime, even though it may have nothing to do with the other workers of the company.
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http://tvtropes.org/pmwiki/article_history.php?article=Main.FallacyOfComposition