PRESENTATION.--First secretly note what the top card of the pack is.
Then proceed by asking a spectator to state what card he wishes you to
use by giving you a number. After having received the number you proceed
to count the cards face down on to a table until you reach that number,
at the same time mentioning that the last card counted is the one you
are to use. You pause for a moment, apparently thinking, then say, it is
possible that the spectator may think that you already know the card as
you counted them yourself, you consider that it would only be fair to
allow him to count them himself. At the same time you replace the
counted cards, and hand the pack to spectator, with the request that he
counts down to the number previously stated. This, of course, has the
effect of bringing the known top card into position at his number, so
that it is quite an easy matter to follow on with any trick in which the
sleight-of-hand force is necessary. This seems very simple, but try the
effect; even our advanced friends will find it extremely useful.