An interesting theory on the Sapient Paradox, the question of why civilization came to be so late in the human species' evolution. We're about 200.000 years old but civilization is closer to 20.000.
The author posits that reputation/gossip control in small groups was the limiter to growth and that the structure of civilization helped dampen this need. However, social media has brought this "gossip trap" back on a worldwide level, risking a return to government by reputation.
I doubt things can be attributed to single causes like this but it's a compelling (and long) read.