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He was a pure mathematician at the time this was written. Now he works for Google, IIRC on self-driving cars:

http://www.knowthecosmos.com/destember/destember-experiment-...

He also won an Oscar this year, his second total:

http://www.imdb.com/name/nm0685004/awards

Nice to know, if an oscar-winning pure mathematician working on science-fiction projects found difficult to learn Haskell, I can save myself the trouble.

If that's your goal. There are some people who do things because they are difficult, because whatever activity is most difficult is probably the most mind-expanding.

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