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.