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If you were taking an engineering class in school and you turned in the human body for your final exam… you would get like, a C+. Or maybe a B- at best. That’s because the human body is full of design flaws. Except they aren’t really design flaws, because the human body wasn’t designed. It was evolved, and it is still evolving. And that means some of our parts don’t work as well as they could, they just work well enough. Here’s a rundown of a few of the human body’s biggest evolutionary fails!

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