I've done a more complete analysis here, with a simulation program: http://loup-vaillant.fr/tutorials/monty-hall http://loup-vaillant.fr/tutorials/monty-hall W

I've done a more complete analysis here, with a simulation program: http://loup-vaillant.fr/tutorials/monty-hall http://loup-vaillant.fr/tutorials/monty-hall Whether you should switch or not is highly dependent on what you know of the host. In the classical problem, you should switch. But there are hosts with which one should never switch.