[Selkirk]

Looks like game theory interaction strategies presented with a bit of color:

Stupid = Spite (lose / lose); Helpless = Altruism (lose / win); Bandit = Selfishness (win / lose); Intelligent = Cooperation (win / win)

The OP "Laws":

Everyone underestimates the number of spiteful individuals in circulation.

The probability that a certain person be spiteful is independent of any other characteristic of that person.

... and so on through ...

A spiteful person is more dangerous than a selfish person.