Pretty interesting - has the IQ of people like "Schoko" Leibnitz and other mathematicians really been tested?
Over 140 seems pretty outrageous albeit when one takes the body of work into account that they managed to produce they must have been vastly superior to even a very talented person. Especially guys like the swiss mathematician Euler who left around 25000 pages of material behind that are being gradually worked into publications... albeit blind at latter age he was the superstar of all wizards.
Gauss for example was obviously very clever from the start and when confronted with the task of adding the numbers from 1 to 100 recognized that all pairs(outermost to innermost) gave the sum of 101 and counted a total of 50 which led him to just calculating 50 times 101. After this feat the teacher hooked him up with a mentor and the rest is history - many fields of mathematics enjoyed his input.
Now compare these folks to bodybuilders...

Any person who sees itself as being very clever could for example try to find a way of efficiently clipping line segments, of arbitrary orientation, to a rectangular area(limted to 2D space) without peeking into the magnitude of specific literature already out there.