Dean, I'm looking to be able to ask a spectator to think of a number, out loud. One of the numbers I'm looking for is 35 or 37. I've been given the ruse of asking a spectator to think of a number between 1-52. Make it a double digit number, and both digits are odd. 35 is the most common number followed by 37, then 17 & 19. I'm okay with that, just what is the justification to ask them to think of a double digit number and both digits odd? It works, and I like the psychological ploy, just needs to have some reasoning? I would prefer to stay away from mechanical devices. I'd like to through instruction, control the thinking aspect to apparently come up with this random number. Any help on this ruse or similar items would be appreciated!!!!!!