The magician attaches a small propeller to a specially notched stick. When he rubs his forefinger over the stick the propeller starts to spin in a clockwise direction! Asking the spectator to give the command, the propeller starts spinning in a counter-clockwise direction! Upon another command the propeller turns in a clockwise direction again. The magician then gives everything to the spectator and try as he may, the propeller remains lifeless.
This Improved Version of the Classic Effect: