I think they are saying, if your neural network was probabilistic and you thought there was a 90% chance of someone doing move A, but a 10% chance of move B, then you shouldn’t always get move A if it was human like - you would sometimes get move B.
I.e. most of the time if you leave your queen hanging and under threat your opponent will take it, but sometimes they just don’t see it. That’s the difference between playing a bot and a human a lot of the time - humans can get away with a serious blunder more often at low level play.
That's exactly what I'm saying - except more like the model is saying there's a 90% chance that a randomly chosen player at this level would make the move.
I.e. most of the time if you leave your queen hanging and under threat your opponent will take it, but sometimes they just don’t see it. That’s the difference between playing a bot and a human a lot of the time - humans can get away with a serious blunder more often at low level play.