I wonder, at times, how much our intra-cultural warfare is due to learned responses (culture) and what portion might represent innate (genetic) differences among humans.

There is a bit of research on decision making under stress, the ability to cope with change, and various alleles having to do with brain chemistry.

Some people are just more willing to deal with change than others.

My inner-armchair anthropologist would like to go in a time machine and speed ahead 5000 years and see how our society works out, what survives and what doesn’t.