> What made Western Europe diverge from places like Russia or Saudi Arabia? Joseph Henrich says it’s the medieval church’s prohibition on cousin marriage, whic

> What made Western Europe diverge from places like Russia or Saudi Arabia? Joseph Henrich says it’s the medieval church’s prohibition on cousin marriage, which dissolved the strong kinship bonds that dominate the rest of the world. He has a book on the subject called The WEIRDest People In The World which is good.