Well, she
is Lisa.
In this house, we obey the laws of thermodynamics!! 
While I think that most people would predict amazing things from most PG/HG+ kids at some point along the line, it only seems fair to let THEM choose how they will define success for themselves, and really-- to change their minds as they mature and grow. (That's my serious footnote to the Simpsons discussion, by the way.)
My daughter also has aspirations to be Krusty the Clown, though she hasn't ruled SCOTUS out, exactly... or, you know, a Fields Medal. I tend to think that all of those outcomes are about as likely as one another, for whatever it's worth, which is good, because Krusty seems like a tough guy to seat at dinner parties.
