Being part of a crowd

On a bit of a lighter note, last night I went to a local bar to watch the Red Sox beat the Yankees. First, I have never really been a Red Sox or Yankees fan, but I was very impressed with the way the Red Sox were so determined to win, even while they were up by 2x over the Yankees. It was remarkable not to have even a hint of arrogance or expectation (especially contrasting this with their normal behavior).

The second thing that my girlfriend's sister pointed out to me was how many people were there. It seems kind of odd really. At home I have a good TV, beer, etc yet people derive more enjoyment from watching things in crowds than they do by themselves. During the average movie or tv show, I will laugh outloud very rarely though I might find many things funny. Yet in a theatre I'll laugh at length at terrible jokes. Why is this? I feel like it's something about how we're wired to feel similar things as those around us, but I could not tell you why for the life of me.

D