http://www.youtube.com/embed/zODxrtj156I you have three doors ,two goats are behind two and a box of cash behind the other..you pick a door ,without opening it, I show one of the other doors which has a goat behind it ,Do you then change doors? If you do you have a 2/3 of getting the box of cash.... It works , I did it with three cups ,two with a penny under and one with a euro... ;D
