There’s several I can think of actually! But I’ll pick one randomly: our wisdom teeth! They’re just a pain and serve no purpose! Its a by-product of evolution from our distant ancestors who had larger jawbones to help them eat rougher foods and so had enough space for all the teeth. But in our modern, smaller sized jaws, there is nowhere for them to grow and so when they come out, they’re just stuck there in the back and painful and have to be removed.
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