Correct the two errors in these paragraphs: this week, though, a computer called alpha go defeats the world’s best player of go. it did so by “ learning” the game, crunching through 30 million positions from recorded matches, reacting and anticipating. it evolves as a player and taught itself. that single game of go marks a milestone on the road to the “technological singularity”, the moment when artificial intelligence becomes capable of self-improvement and learns faster than humans can control or understand.