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tu quoque

Filed under: Logic — anlactunay @ 2:19 PM

tu quoque=
The fallacy of tu quoque is committed if we conclude that someone’s argument not to perform some act must be faulty because the arguer himself or herself has performed it. Similarly, when we point out that the arguer doesn’t practice what he preaches, we may be therefore suppose that there must be an error in the preaching, but we are reasoning fallaciously and creating a tu quoque. This is a kind of ad hominem circumstantial fallacy.
Look who’s talking. You say I shouldn’t become an alcoholic because it will hurt me and my family, yet you yourself are an alcoholic, so your argument can’t be worth listening to.

Discovering that a speaker is a hypocrite is a reason to be suspicious of the speaker’s reasoning, but it is not a sufficient reason to discount it.


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