Steelman
Genetic fallacy
Also called fallacy of origins, etymological fallacy (for word meanings).
Judging a claim by where it came from instead of by its merits.
What it is
Accepting or rejecting a claim because of its origin or history (where, when or how it arose) when that origin has no bearing on whether it’s true or good now.
The pattern
X originated in (or came from) source S. S is disreputable (or admirable). Therefore X is false (or true).
An example
“You only think saving for retirement matters because your parents drilled it into you. So it’s not a real reason.”
How you came to believe something doesn’t show whether it’s true. The case for saving stands or falls on its own reasons.
Why it fails
How an idea started doesn’t settle whether it’s correct. Good ideas have come from dreams, accidents and unpleasant people; bad ideas from respected institutions. The idea has to be judged on the evidence for it.
When it’s not a fallacy
Most lists skip this part. Calling a fair point a fallacy is a mistake too.
It can be fair when
- The origin bears on reliability. A claim that started as an anonymous forum rumor, or that comes from a company that profits from it, deserves extra scrutiny, though scrutiny isn’t the same as refutation.
Try one
A question from the app. The wrong answers are its usual look-alikes.
Hana: “Recorded-music revenue has grown every year for about a decade, mostly from streaming, and more artists than ever are finding listeners abroad.” Felix: “Look who built the biggest service, though: two tech guys who made their money in online ads. Whatever the charts say, a thing made by ad men was never going to be good for music. I’m sticking with vinyl and buying shirts at shows.”
What’s the flaw?
Who founded a service doesn’t decide what it has done for music. Hana gave evidence about revenue and reach; Felix answers it with where streaming came from instead.
A fair reply
“Say they’re ad men, but the revenue is still there, so what’s wrong with those figures?”
Often confused with
- Ad hominem
Ad hominem is the special case where the “origin” being attacked is the person arguing.
- Appeal to tradition
Appeal to tradition uses an idea’s long history as support. The genetic fallacy uses its origin to support or discredit it.
Where the name comes from
“Genetic” here isn’t about DNA: it comes from “genesis”, Greek for origin, so the fallacy judges an idea by how it began. “Fallacy of origins” says it in plain words. The etymological fallacy is the word version, treating a word’s oldest meaning as its true one. Fittingly, “etymology” comes from the Greek etymon, “true sense”.
The Oxford Companion to Philosophy credits Morris Cohen and Ernest Nagel’s Logic and Scientific Method (1934) with the term, though Mortimer Adler had already complained of “the fallacy of genetic interpretation” in 1926.
Sources
- Fallacies, Bradley Dowden, Internet Encyclopedia of Philosophy
- Genetic fallacy, Wikipedia
In the app
Practice spotting it on arguments that sound real.
Steelman has more examples of genetic fallacy, how to answer it in a real conversation, and practice rounds that mix it with its look-alikes, so you learn the difference, not just the name. Coming soon to iPhone and Android.
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