If you think it's a simple case of pointing in another direction and hoping they'll look, you have an awful lot to learn.
I don't think I ever said any such thing. Though to me, misdirection is best utilised as a subtle tool to enhance your effects further, rather than being the method, effect, the whole caboodle (sp?).
What I meant was that if the effect HAS NO RATIONAL EXPLANTION and your misidirection or whatever was used was indetectable then the only avenue for a lot of people to go to is something supernatural.
I would argue that they don't know how you got the card under the box (or whatever), and not that they think there is no rational explanation. They know you put it there, but they just dont know how you did it. I would be suprised however, if many rational adults believed a card under the box routine had any links to the supernatural.