Oh I was going to question the other two assumptions, that surgeons, lawyers, and engineers work very hard, and that they (as an averaged group) are just as smart as the ultra-rich (as an averaged group)
People who are highly skilled in one area run the same range as anyone else in other areas. Sometimes it even seems like people who focus hard in one area are the least balanced in depth and accuracy of general knowledge. I want to see the experiments testing the wisdom of the crowd done on experts in one field.
