> Not everyone w/ADD is "edgy."   Some aren't hyperactive at all.

True. There are a number of 'sub-designations' of ADD. (ADD, ADDHD,
ADDOC, etc.)

> Some w/ADD can focus in the extreme,

Also true. We call it "hyper-focus". Some kids seem to be unable to
focus onanything one minute, and then exclude all outside influences
the next, "hyper-focusing" on one thing. Most notably video or
computer games.

It's not that *all* of us don't have some of these traits. It's just
that in some of us they are (much?) more pronounced.