Jul 5th: Scientific American did a podcast episode about Cleo, the Math StackExchange user who posted incredible answers with zero explanation and then disappeared in 2015. I would love to know who they were and why. Terence Tao confirmed that he was not Cleo. Some people thought it was Hawking, or Ramanujan reborn. Just excellent work.
This is the personal website of Cal Henderson, Slack co-founder & CTO.
I give occasional talks, write code and sometimes articles.
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