The fish doesn't need to grok the entire game, it just has to be better than the other fish. (Cue that joke about two people being chased by a bear and one pau

The fish doesn't need to grok the entire game, it just has to be better than the other fish. (Cue that joke about two people being chased by a bear and one pausing to put on his sneakers. "What are you doing? You can't outrun a bear!" "I don't have to, I just have to outrun you!") For example, if fish A realizes that swimming around corner X gets it food, because X happens to correspond to "move forward and punch", that's enough to win the game if fish B doesn't figure out the same.