There's a whole fascinating book about the evolution of this illusion. http://www.amazon.com/Hiding-Elephant-Magicians-Impossible-Disappear/dp/0786714018/ref=sr

There's a whole fascinating book about the evolution of this illusion. http://www.amazon.com/Hiding-Elephant-Magicians-Impossible-Disappear/dp/0786714018/ref=sr_1_1?ie=UTF8&qid=1334606906&sr=8-1 http://www.amazon.com/Hiding-Elephant-Magicians-Impossible-D...