[dcbadacd]

Somewhat. If the gifted kids can socialize among themselves then that certainly is more beneficial. In theory it'd be nice to only interact with people like oneself but I don't see that happening, learning how to interact with others is definitely not useless but indeed depends on the amount. Not sure I'd measure usefulness with some productivity metrics, that success = productive kid at that point in time, social skills are hard to measure like that.

[kick]

Children aren't really the "others" of the adult world; they aren't fully grown enough, generally, to be of interest. Were the child or adolescent interacting with non-gifted adults, it would make sense. Not so much children.