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.

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.

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.

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