Ah, Tony - but there is a big difference between s...

Ah, Tony - but there is a big difference between smarts and IQ! One of my closest friends in high school was supposed to be one of the cleverest girls in the school. She went on to rise to great heights in her field. That said, I never considered her even remotely smart... I still don't.

If all you were after was IQ, you could find that on a certificate, exam results, etc. The reason you have to interview to assess it is because "smarts" is an illusive, intangible quality that can't be assessed any other way.