Memories by Paul Abrahams: https://paulabrahams.substack.com/p/memories-of-ed-fredkin https://paulabrahams.substack.com/p/memories-of-ed-fredkin In a comment,

Memories by Paul Abrahams: https://paulabrahams.substack.com/p/memories-of-ed-fredkin https://paulabrahams.substack.com/p/memories-of-ed-fredkin In a comment, I mentioned the Three Scientists and Their Gods profile (which someone else in the comments has also mentioned) and also that Fredkin was apparently the ultimate origin of a very widespread anecdote about overfitting in machine learning: https://gwern.net/tank https://gwern.net/tank