One of South Korea's most celebrated professional Go players, master Lee Se-dol, has retired, citing the futility of raging against the machines as a motivating factor. With the debut of AI in Go games, I've realized that I'm not at the top even if I become the number one through frantic efforts. Even if I become the number one, there is an entity that cannot be defeated. Se-dol's 24-year career includes wins over dozens of the world's top players, including a stint as world champion. He faced DeepMind's AlphaGo in five matches during March of 2016 where he managed to come away with just a single win. Prior to the bouts, Se-dol predicted he'd win by "a landslide," and by all reports he was flat-out stunned when the AI repeatedly beat him.