1. Do you think human societies are characterized more by competition or cooperation?
2. What is the prisoner’s dilemma?
3. What is the ultimatum game? What did the researchers find when they used this game in other cultures?
4. Do you think the humans will always destroy the commons (water, land, etc.) that they share? Why or why not?
5. How do sites like Wikipedia illustrate an instinct to work together and cooperate?