Totally agreed. > Nor is it to say that it's impossible for a person with an average I.Q. to, say, earn a Ph.D. in physics I know few physics PhDs that are ab

Totally agreed. > Nor is it to say that it's impossible for a person with an average I.Q. to, say, earn a Ph.D. in physics I know few physics PhDs that are above average. Earning a degree has a lot more to do with grit than talent. Making real breakthroughs in science... that's a different thing.