It took me years of going to bars and clubs and thinking the same thoughts:
Wow this music is loud
I can barely hear myself talk, let alone anyone else
We should all learn sign language so we don’t have to shout at the top of our lungs all the time
before I finally realized—the whole draw of places like this is specifically that you don’t talk.
I think ancient DNA analysis is the space to watch here. We’ve all heard about Neanderthal intermixing by now, but it’s only recently become possible to determine e.g. that two skeletons found in the same grave were 2nd cousins on their father’s side, or whatever. It seems like this can tell us a lot about social behavior that would otherwise be obscure.