“It's extremely difficult for me to tell you the secret of anything," says Bill Kalush, 47 years old, founder of the center. "Real secrets are psychological and deep. To take a simple secret and perform it in a way that looks like magic is extremely difficult." He offers as an analogy: "This is a scalpel. See how sharp it is? That's how to do surgery."
Great observation, from an interesting Wall Street Journal article by Demetria Gallegos about the Conjuring Arts Research Center, a magic library for magicians only.