[jmcminis]

This is kind of an odd question. It only indicates how old they were when you were lucky enough to meet them. Presumably, that person has been gifted before and would be gifted after as well, not just when they were XX years old.

I would be interested to know the trajectory these engineers had as they aged. Were they average until they got some experience under their belt? Genius from day one, but productivity improved? How did they develop over time and what were the predictors of greatness?