David Regal Presents – The Hummer Principle

Imagine this: your spectator mixes ANY cards face-up and face-down while YOUR back is turned. Then:

Miracle 1: You KNOW how many cards are reversed. Impossible!

Miracle 2: You CAUSE the red cards to separate from the black!

Miracle 3: You ASK the spectator to THINK of a ANY card…

and what happens next is 100% impossible!

Video by David Regal + Pdf explanation by David Regal + Original “Face Up Face Down Mysteries” by Bob Hummer