If the choice is between Model 1 and Model 2, then Model 1 should be simpler because it doesn’t contain an A-shaped hole in the universe, inside which different laws apply.
Model 2 doesn’t have this hole, it includes description of the agent as part of the world. However, belief in it doesn’t have any effect on A’s decisions, so this point is of unclear relevance.
Model 2 doesn’t have this hole, it includes description of the agent as part of the world. However, belief in it doesn’t have any effect on A’s decisions, so this point is of unclear relevance.