Research into the reasons for trepanation (2016)
bbc.com
bbc.com
Drilling someone's mind seems to be a common theme among societies.
Thousands of years of evolution to end up making something like that a part of the science corpus. Discouraging.
People in the 60's did the hole in the head to get high - more oxygen to the brain. Not everyone but a few people. It could have been a thing like that fashion a few years ago with people getting their tongues split in two - detestable as a thought for most people but with some people who get into it.
I thought that there were also necklaces with the bone discs, not seen any stories of that recently.
Do you have any sources for that? It's the the first time I've heard of such a thing. Not doubting you, just curious to learn more.
Wouldn't that be like stuffing your chest cavity with food to give your stomach more nutrients?