Reply #1: curious articles on same site

[handmade34]

"Carrots Are Better Than Sticks For Building Human Cooperation, Study Finds"

"Winners Do Not Punish: Punishment Does Not Earn Rewards Or Cooperation, Study Finds"

"Evolution of Fairness and Punishment"
"Researchers have long been puzzled by large societies in which strangers routinely engage in voluntary acts of kindness, respect and mutual benefit even though there is often an individual cost involved.
...suggests that the cooperative nature of each society is at least partly dependent upon historical forces -- such as religious beliefs and the growth of market transactions...The study also found the extent to which a society uses punishment to enforce norms increases and decreases with the number of people in the society."