How old is Edward Kmett? He has been a major force in Haskell (fancy type/algorithm stuff) in the past few years, but did not start his contributions around age

How old is Edward Kmett? He has been a major force in Haskell (fancy type/algorithm stuff) in the past few years, but did not start his contributions around age 20 like many top Haskellers of the past 15 years (folks who were not on the original committee).