Ten years ago this week, a machine sat down across from the greatest board game player on the planet inside a hotel in Seoul, South Korea. The game was Go. It's over 3,000 years old, and it has more possible board positions than there are atoms in the observable universe. Nobody thought a computer could win this match, not for at least another decade. The machine won four games out of five. But the score wasn't the story but rather one single move during Game 2. Move 37. AlphaGo placed a stone in a position so strange that the commentators broadcasting the match live thought the system glitched. Professional Go players watching around the world called it a mistake in real time. But it wasn't a mistake. It turned out to be one of the most brilliant moves in the entire 3,000 year history of the game. And a machine came up with it on its own. AlphaGo had calculated that the odds of any human ever making that move were about one in ten thousand. It played the move anyway and that move is what won the game. Lee Sedol, the world champion sitting across the board, stared for over twelve minutes he sat there trying to process what happened. ...