How smart is Hillary, really? (Real Clear Politics w/Conason)

I finally have to wonder just how intelligent Hillary really is: with her two-note permanent tune of either answering with memorized boilerplate about anything she is willing to discuss and her endless lack of defense against questions she wishes to duck beyond going brazenly off point -- over and over and over. Isn't she capable of putting on a more convincing show when ducking -- instead of simply not answering in a direct way, every time? Seems too, too easy a formula to repeat over and over for supposedly presidential timber who should be able to put up more of a genuine rhetorical skirmish.