Probability or Decision I ld like to retrieve one small item from the above hidden stuff Martin s remark the answer is 2 3 and mine no the answer is switch I did not mean to imply that the 2 3 should be made completely invisible Of course one must emphasize that a good reason to switch is because the probability is 2 3 that you ll get the car this way It is even a very very good reason to switch since it is can be shown if all doors are initially equally likely to hide the car that you can t do better in particular complicated strategies of sometimes switching sometimes staying depending on specific door numbers lead to a smaller chance of success Morgan et al Gill I hoped that this remark of mine would help show that by careful choice of words it s possible to write sentences which many more editors could agree with And which everyone can agree are not misleading and which everyone can agree reflects what is in the literature Remember Vos Savant and Whitaker ask what the player should do Introducing probabilities into the story is one way of finding justification for an action The phrase the probability leads straight to controversy at least to disagreement both among editors and in the literature The phrase what action should the player take leads to concensus both among editors and in the literature It s just meant to be a small practical concensus building suggestion