In 2016, the AI program AlphaGo won a five-game match against one of the world’s best Go players, Lee Sedol—something that shocked both the AI and the Go-playing worlds. AlphaGo’s most famous move was in game two: move thirty-seven. It’s hard to explain without diving deep into Go strategy, but it was a move that no human would ever have chosen to make. It was an instance of an AI thinking differently.

