I'm guilty of booing sometimes, and to me the thought process seems to be:
1) The bad performance makes me feel bad.
2) The crowd is similar to me, and is my in-group in the situation.
3) Therefore, the bad performance is making everyone else in the crowd feel bad.
4) I empathise with the crowd more than the performers, since the crowd is a constant in-group I can identify with through the entire event, while the performers are fleeting and on average neutral.
5) Therefore to signal my anger on behalf of the crowd's suffering, I boo at the bad performer, who has slid from neutral to Enemy.
This is an awesomely clear explanation of the thought process. I can see how "willingness to take on an enemy" or "willingness to speak for everyone" may be deciding factors in who boos and who doesn't. It also explains why booing only happens in large crowds (at sufficiently small events, everybody is in the same group). Cheers!
The other day, someone did something I didn't expect. It was something many people have done before; something that I thought of as very normal, but that I in no way understood and had not predicted.
As I said, this had happened many time before, so I wrote it off as "me not understanding people" or "people are weird" for a second, like I usually do, before realizing that "bad at" really means "lacking basic knowledge", which I had never realized before.
And then I thought "I should ask someone who is different from me why people do that, and eventually someone will have an answer."
But many people will have many more questions like this. So, what have you observed people doing time and time again, but never understood? Or something that you only understood after a long time or asking someone about it?
And can Less Wrong tell us, not necessarily why (I for one can make up evolutionary psychology fairy tales all day if I want) but what conscious thought process occurs behind these events?