It is frequently advantageous to stop communicating with someone, whether as social punishment, avoidance of feelings of awkwardness, or to dissociate yourself from low-status friends. People want these social advantages, but many people prefer not to undergo a "breaking-up" conversation, even when in a non-romantic context. (For obvious reasons: it's likely to be a conflict-ridden conversation, and their motivations often do not sound noble when explicitly stated.)
Dropping that person like a hot potato is a way to get the social win without the corresponding awkwardness.
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?