http://www.nytimes.com/2007/08/21/science/21magic.html?ex=1345348800&en=fc04c311320ab18c&ei=5090&partner=rssuserland&emc=rssFrom the article, a definition of what magic is:
“The theatrical linking of a cause with an effect that has no basis in physical reality, but that — in our hearts — ought to.”