text: how does david blaine and david copperfield fly in the air? even if its a trick how do they do it? and david blaine does it in the middle of the street. it's a highly secret gimmick that david blaine himself told the press that " it's not for sale" maybe the secret is too powerful to give away for money when he can earn more by not selling it to any...nevertheless it's a trick/illusion and not some kind of a voodoo stuff