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Genetic fallacy

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Title: Genetic fallacy  
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Subject: Ad hominem, Appeal to accomplishment, Genetic fallacies, Chronological snobbery, Argumentum ad populum
Collection: Genetic Fallacies, Relevance Fallacies
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Genetic fallacy

The genetic fallacy (also known as the fallacy of origins or fallacy of virtue[1]) is a fallacy of irrelevance where a conclusion is suggested based solely on someone's or something's history, origin, or source rather than its current meaning or context. This overlooks any difference to be found in the present situation, typically transferring the positive or negative esteem from the earlier context.

The fallacy therefore fails to assess the claim on its merit. The first criterion of a good argument is that the premises must have bearing on the truth or falsity of the claim in question.[2] Genetic accounts of an issue may be true, and they may help illuminate the reasons why the issue has assumed its present form, but they are not conclusive in determining its merits.[3]

According to the Oxford Companion to Philosophy (1995), the term originated in Morris Raphael Cohen and Ernest Nagel's book Logic and Scientific Method[4] (1934).


  • Argument from age ("Wisdom of the Ancients") 1
  • "Not invented here" 2
  • Examples 3
  • See also 4
  • Notes 5
  • External links 6

Argument from age ("Wisdom of the Ancients")

This is a common version of the genetic fallacy where the thing in question is very new or old, so it must be better. Examples include products advertised as "New!" or "Old Fashioned Hamburgers".[1]

"Chronological snobbery" is a version of the genetic fallacy which works the same way in reverse, where the thing in question (usually an idea) is very old, so it must be bad or inferior. It does not follow logically from the fact that an idea is very old that it must be bad, inferior or false.

"Not invented here"

Another variation is to dismiss outside ideas because they did not originate from here. "This is the way we've always done it." This fallacy is often abbreviated "NIH". The converse of this is also false. Being foreign made does not necessarily mean something is better.[1]


From Attacking Faulty Reasoning by T. Edward Damer, Third Edition p. 36:

There are numerous motives explaining why people choose to wear wedding rings, but it would be a logical fallacy to presume those who continue the tradition are doing so with the intent of promoting sexism.

From With Good Reason: An Introduction to Informal Fallacies by S. Morris Engel, Fifth Edition, pg. 196:

A commonly occurring example of this style of reasoning can be called the "etymological fallacy". This presents arguments based on the supposed real meaning of certain words, where that "real" meaning is in fact what the word meant centuries ago, or what its root word (in Latin, Greek etc.) meant. A popular tactic, it is easily shown to be fallacious and misleading. Thus:

This is not merely a non-sequitur. It reflects that the first speaker simply accepts the contemporary meaning of "arrive", whereas the second recalls the Latin origin: ripa meaning "shore" (compare also the words "river" and "Riviera"), whereby the English word "arrive" contains within it the idea of disembarkation.

See also


  1. ^ a b c "A List Of Fallacious Arguments". Retrieved 6 October 2012. 
  2. ^ Attacking Faulty Reasoning: A Practical Guide to Fallacy-Free Arguments (Third Edition) by T. Edward Damer, chapter II, subsection "The Relevance Criterion" (pg. 12)
  3. ^ With Good Reason: An Introduction to Informal Fallacies (Fifth Edition) by S. Morris Engel, chapter V, subsection 1 (pg. 198)
  4. ^ Honderich, Ted, ed. (1995). "Genetic fallacy". The Oxford Companion to Philosophy. Oxford University Press.  

External links

  • Nizkor: Genetic fallacy
  • Forms of the genetic fallacy
  • Fallacy files: Genetic fallacy
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