Punish doesn't have the highest, it has negatives for yourself and the one being punished, but they get more points taken away than yourself. Defect has the highest point return. You should go read more on the prisoner's dilemma, as I didn't explain it in depth here. It's been done many times ;)

Thank you for the valuable feedback on being punished. I agree it demoralizes and devalues people more often than not. There is also a difference in wrong doings, strict punishment for minor errors in conduct does not help make people better, just more resentful I think.