I wonder if he has any evidence of that, or whether he's just putting forward a theory that he plans to test.
- Robin Barooah
A fair bit of it seems like stating the reasonably obvious. He says "tears send a message of distress to potential allies in the vicinity" - and maybe that gets underplayed. Evolutionary psychology is not best-known for its solid experimental foundation, though. It is often a case of: who can think of the most convincing-sounding just-so story.
- Tim Tyler