[/quote]I'm not sure *anyone* is as smart as TT!

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I think that is part of problem of the different levels of Ruf's book is that you can go insane trying to figure out where dc fits.
Not that you spend days agonizing but yes, she does this early, this did that not so early, this did this super early. How smart is she?
I try and remind myself that IQ can be high, it can skew in different directions. Like my friend, who got a PhD with Feynman and worked on the shuttle solution after Challenger blew up. He sits on international super computing committees etc. Yet, he says that I am the smartest person he knows. Because I have a different kind of brain than his. Because my brain works differently, he thinks I am smarter.
And, although DD has strengths in many areas, different from mine, she also shows the same strengths, some of which may not be as measurable as her ability to do math.
It is like what did Jackson Pollack have inside of him to create what he did in the middle of his career? Could you have measured it,no, but it is a perfection of brilliance. Or when you read Proust (actually get past those first 30 pages) and how he wove such tales together over 7000 pages and decades of his life.
My point, somewhere, is that how smart is smart? With someone like TT, you can do calculus in your head at 10, and I am not taking anything away from this amazing child, and I hope he finds us a green energy source that employs millions, but how many of the brilliant things accomplished were done by prodigies or just the super smart? I actually do not know.
Ren