Could people be trained to be less gullible? Or are you as stuck with gullibility as you are with skin colour?

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.

People under the influence of cults is similar to that we observe in addicts. Typical behaviour for both includes draining bank accounts, neglecting children, destroying relations with family and losing interest in anything except the drug or cult.

Fighting hard to protect yourself and your relatives is good for your genes, but when captured and escape is not possible, giving up short of dying and making the best you can of the new situation is also good for your genes.

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

Perhaps teachers should be instructed in a program where they lie to their students on a regular basis to sharpen up their skills at detecting lies.

People can undergo a sudden change of thinking and loyalties under threat of death or intense social pressure and isolation from friends and family.