Both kids in a pair play according to "correct" rules. Just different. So the possible outcomes are: - observer forces his version of rules - observer fail t

Both kids in a pair play according to "correct" rules. Just different. So the possible outcomes are: - observer forces his version of rules - observer fail to force his version of rules - player is forced to abandon the game - observer is forced to abandon the game - both observer and player voluntary decide to abandon the game - both figure out they were given different "correct" set of rules, so they pick one of the sets or come up with a new one