Here is another close-up or parlor version of the Monty Hall problem. It can be a standalone effect, or a premise, or a follow-up to other versions ( “V1” , “V2” , “V3”, “Transaction” ), again with a completely different method. It helps to demonstrate that a player should always switch, but in a very baffling way.
In the first phase, you show that the spectator should switch the two doors in order to win.
But in a second identical phase, they will always loose!

- Not a “puzzle”, no Logic involved. (Actually, a real mystery that looks completely illogical, mind-blowing and disturbing!)
- Starts clean, and ends clean.
- Automatic reset.
- Can be done stand-up or on a table.
- No difficult sleight of hands, uses classic “secrets” with a different twist.
- Does not take pocket or wallet space. Carry this with you, and they will scream!
- Can be adapted to any type of venue (bars, restaurants, weddings, conventions, children, birthdays, etc.), to your style ( (comedy, magic, or mental/hypnosis).

The TV game, “Let's make a deal”, as it was broad-casted in the 60's by Monty HALL (during thirteen years), was proposing a choice to a candidate among three closed doors. Behind one of them, there was a fantastic price (like a car), and behind the two other ones there was a cheap or funny prize (like a goat). The player must show a door, without opening it. Then, the host opens a door that has a goat behind it (He is the only one to know where is the Ferrari). The spectator needs now to decide to stick with his or her first door, or to open the other one.
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