CFK, that's what I always thought of as PG -- just super-crazy smart in a way that's extremely rare.
So I have a hard time thinking my child as PG, and I have a hard time thinking there are that many children represented on this thread as being PG, or super-crazy smart, like understanding astrophysics at age 9.
I guess sometimes it's a matter of personal perception -- what one person thinks is HG, another thinks is PG. Seems like the lines can be pretty blurred, even in terms of IQ scores (I'm no expert on IQ testing as I haven't even ventured down that road at this time, so correct me if I'm wrong).
I think of DD5 as being HG-HG+ -- she's wicked smart to me and has a crazy drive to learn and be mentally engaged, even if that mental engagement means some good hard-core creative playing instead of pure academics. The private school she attends for Pre-K said they've never had a child like her (they currently pull her out for reading but also recognize her math is accelerated, too... not to mention her leadership abilities). When you wrap up all of her personality traits into this tight little bundle, you get my DD5. My aunt sums it up perfectly: "She's a dandy!"
