Watch this video and answer: In the video, they played the game about 200 times. That is long enough that people may treat it as infinite. However, imagine if you played this just TWO times. Now, try to think ahead: in the second period, would you expect the players to defect or cooperate? And given that answer, how would that impact the first period?
Watch this video and answer: What is the key difference between a simultaneous game and a sequential game, ie, WHY is one a matrix and the other a tree?
Each question just need several sentences, I need it in 12 hours