I'm not trying to flame, I think David Blaine's work is amazing, but theres an explaination for it, and the below link is a little hint as to what some answers are.
Angles are the key in many forms of magic.
I had the chance to see D.B. on the streets of Manhattan. There he showed this trick to me and a couple of other people. Then a asked if he could let a soccer ball roll underneath his feet while he was floating. I'm not trying to flame, I think David Blaine's work is amazing, but theres an explaination for it, and the below link is a little hint as to what some answers are. Angles are the key in many forms of magic.