As a slight addendum to my previous post, I believe that the audience can still experience magic even if they know (or believe) the effect is acheived by sleight-of-hand. Something does not have to deceive in order to astonish. The prime example of this maxim is Derren Brown. Many of his audience are convinced they understand his methods, citing NLP, hypnosis, body-language etc., but that in no way reduces the impact, or the magic, of his effects. Therefore, a self-confessed manipulator still has the power to produce moments of wonder, as long as he pays attention to proper theatrical presentation. In this way, a deftly executed card flourish could have the impact of Mr Brown's instant handshake induction.