Cults, or related social movements such as the Taliban in Afghanistan, result in massive military expenses.

Action leads to Attention. that in the short-term releases Rewarding brain chemicals and in the long term improves reproductive success.

Most of the suicide hijackers came from Saudi Arabia, a place not lacking in wealth. But due to rapid population growth, the wealth per capita has fallen by about half in a generation.

Successful cult memes induce intense social interaction behaviour between cult members. This trips the attention detectors.

If anyone wonders why the airlines are not doing well it is because flying has been made such an unpleasant and degrading experience.

High status males had multiple wives or additional mating opportunities in the ancestral environment.

Children do not have to learn that streets are dangerous places by potentially fatal trial and error.