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.

As for leadership, I am the kind who leads reluctantly and more by example than anything else. Someone had to be on the incorporation papers as president.

The rare person is still interested in new advances when they are adults. There is possibly a correlation with intelligence. In any case, you have to be fairly bright to keep learning and changing attitudes as you get older.

Even small cults are a serious cost on the world economy, to victims, their families, employers, friends, and credit-card companies.

Some people recovering from drugs or alcohol stay with the programs indefinitely, making the recovery program their family, a long-term source of attention rewards.

Evolution acts slowly. Our psychological characteristics today are those that promoted reproductive success in the ancestral environmen.

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