Well, for those of us who have problems with grokking "normal social interactions" at some level, unwanted conversations/questions are a *continuing* trial.

Yet it seems to be considered *normal* ask personal questions of coworkers and rude or "not a team player" to not freely discuss your private life with them.

The kid and the jerks are extreme examples, but... they are merely the far end of the curve. :-(

Gee, do you suppose I've got this book (or notebook or whatever) because I *want* to be interruppted?

Going postal is *so* tempting at times. But that'd just inconvenience me even more. <sigh>