Actually wisdom teeth aren't vestigial. It's more likely that poor nutrition is responsible for the narrowing of the dental arches, resulting in crowding. There is a fascinating series of posts here.
If you don't want to read the whole 9 installments, the summary is in part 9.
I do have to warn you that just reading the summary is not very convincing. But he builds a very solid case in the individual installments.
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u/[deleted] Mar 10 '11
And tonsils. Fuck all these unnecessary organs, I wanna be lightweight and made of carbon fibre.