Do we know why that feeling of awe and wonder tends to give us goosebumps? Like, what's that about? Oh, man. That one took me about a year to kind of figure out. The deep answer is from work on nonhuman primates and other social mammals. Social mammals when they face peril, fluff up their fur, which is the ancient mammalian equivalent of goosebumps. And it's related to fear, a little bit fear, but more about merging with my friends nearby.