Start anywhere, but you’ll still end up
where I know you will.
This prediction video is by Richard Wiseman. Years ago I read his book on magic theory (called, appropriately, Magic in Theory) that he wrote with Peter Lamont. Since then he’s also written many more books which combine his interests in psychology, magic and perception.
I remember seeing this type of trick a few different times on television, since it’s one of the few interactive pieces of magic a performer can do when the audience isn’t right there with the magician / psychic / mentalist.
(Yes okay it’s obviously an algorithm,
but what if you didn’t know that?)
Magic in Theory, Wiseman and Lamont, Amazon>>