The laws of probability seems simple at first thought, but scratch the surface and their inner truth can be rather more counterintuitive. This video describes one of those situations -- and the answer might prove more useful than you think.
In this alternative to
really nice new recasting of the Monty Hall problem by New Scientist, the stakes are high: understanding probability could help a fictional you make the a decision that could save your life. So, how do you choose? Let the video play through and choose your own ending to find out. [New Scientist]