[godelski]

  > Von Neumann's mathematical fluency, calculation speed, and general problem-solving ability were widely noted by his peers

I'm impressed by LeBron's basketball skills. I'm not sure what that has to do with IQ.

Certainly von Neumann's quickness helped him solve problems faster, but I'm not sure what this has to do with the discussion at hand. The story of Polya is not dependent upon von Neumann's speed, but it certainly makes it more impressive. The quote says "unsolved problem." It would be impressive if a solution were handed back in any amount of time.