Is that the important difference? The article is talking about sensor error if I read that right, so there's not much opportunity for that in a game environment

Is that the important difference? The article is talking about sensor error if I read that right, so there's not much opportunity for that in a game environment. It's not like one needs sensors to know the state of a board game, or even an atari game. The world is really its own _perfect_ model. That's basically why all the RL approaches for game playing don't work nearly as well in the real world: because in the real world policy is a function of state, action, error.