blackberry tree, game theory, etc

I have shown several people where the blackberry tree by Fuller road is. Rui and I used to take an evening walk everyday in the summer. We would stop by that tree and taste some berries. Jinli, Ying and I are going to pick more blackberries tomorrow, so I need to wear dark clothes.

This evening I went to the North Campus's School of Information to help with an ecomics experiment. Ying's friend need some sample data from engineering people. Basically we were asked to guess the answer that could possibly give us more points based on our judgement of what others might choose. The experiment was based on the game theory, which I knew nothing about.

I somehow felt depressed after the game. It was probably because in that game being selfish tends to get you more points. And that was how I did it. I wonder if there is any case where people would try to maximize the benefits of both sides.