After i finished all of arthur c clarkes books i had anxiety. Like really there’s no more? Also, This is why I’ve read like 20 drizzt do’urden books

Everything you typed is not related to evolution whatsoever. Mastication is directly related to evolution. That’s the difference. Use a different word. It’s not evolution. Laughter has nothing to do with evolution of humans. It’s has to do with cultures. There are cultures in history who NEVER laugh. Laughter is not an evolutionary function of humans. It’s a learned social behavior based out of culture. It is absolutely NOT instinctive. When someone tickled you, your animal brain wants to murder them. SOCIETY and culture has taught you to laugh instead. That’s cultural dude. Tribes in the Amazon do not laugh. They murder things. That’s evolution.

I have evolved eyes and ears to tell if someone is near me. Nice try though. Behavioral “evolution” is really complicated, even more so than functional evolution. In fact, different cultures can have complete opposite behavioral “evolutions” as you claim. The behavior of laughter, is not like the function of eyesight. I have evolved to be able to decide when I want to laugh, what i think is funny, and when to laugh loudly or quietly. Humans, all humans regardless of culture, evolved to have two eyes with the general upper limit being 20/20 vision. So no. To your theory on behaviors being evolved. No. Mastication is an evolved function. But different cultures chew differently and make different noises when they eat. Alone with others. It’s called culture. Not evolution

I don’t laugh to attract others. I laugh hardest when I’m alone in fact. Not sure about that one. I watched dave chappelles stand up on snl three times by myself and was barely able to breath it was so funny