Hmm, so this would mean that a normal player sees the game as just a bunch of pieces, whereas a pro looks at the position (strategy, advantages for one player, etc). Well, it would explain some things about pros, but what does this mean when you train with an AI? I mean, yes, you get more experience, but a typical game for a computer is not a typical game for a computer at all. It would be nice to know which AI Magnus Carlsen used to train and compare it's playstyle to that of pros. Maybe his strategy is just different enough to catch people with something they don't expect/know and give him a slight advantage.