We used to do a mind-reading trick like this: the magician takes somebody out of the room and "attunes" them - ie tells them the rules, which are .. if the magi

We used to do a mind-reading trick like this: the magician takes somebody out of the room and "attunes" them - ie tells them the rules, which are .. if the magician asks if the object is something that has a specific attribute, such as being a certain colour, then its not that thing but is the next thing that the magician will ask about. then the magician comes back to the room, and the people there decide on an object. Beckon the mind reader back in and the magician points to a series of objects and the mind reader gets the correct one, every time