140 is considered genius. It's based on age.  So a 20year old with 200 iq has the life experience of a 40 year old. 20yr with 150 IQ is equivalent to 30yr 100iq. But it's not exact. I could also be wrong, but I think that's how it works. Also the average IQ is always 100. But every I think 10 years the average is about 2 higher.  Unless you import 3rd worlders.