It's so funny that smiling conveys happiness in humans because for every other primate teeth are weapons, so it's like we're all walking around waving loaded guns at each other to say hi.
Might have something to do with the fact that humans have some of the worst teeth in the entire animal kingdom. They aren't really useful as weapons and without the advent of cooking / fire, we would probably not have developed a lot. Every single primate other than us have better teeth which are much more suited for the diets, and don't just kill the host when food gets stuck in them for a while.
We gave up the vast majority of our jaw muscles in exchange for brainspace. In primates, the jaw muscle extends all the way up the side of the skull, our bite force is now something like 90% weaker because ours don't.
It's so funny that smiling conveys happiness in humans because for every other primate teeth are weapons, so it's like we're all walking around waving loaded guns at each other to say hi.
Might have something to do with the fact that humans have some of the worst teeth in the entire animal kingdom. They aren't really useful as weapons and without the advent of cooking / fire, we would probably not have developed a lot. Every single primate other than us have better teeth which are much more suited for the diets, and don't just kill the host when food gets stuck in them for a while.
We gave up the vast majority of our jaw muscles in exchange for brainspace. In primates, the jaw muscle extends all the way up the side of the skull, our bite force is now something like 90% weaker because ours don't.