The new version of AlphaGo has trained against itself millions of times, and has learned to become very good at exploiting the weaknesses in previous versions。 That‘s why it’s about three stones stronger in head-to-head games against its older self。 But that doesn‘t mean anything when it comes up against a human player with whom AlphaGo has never trained - particularly a great master like Ke Jie, who can uncover new weaknesses we don’t know about。 The scales just aren‘t comparable。 We are excited for the second and third games this week!