The Magic Oath, Secrets of Magic

The purpose of a magic trick is to amuse and create a feeling of wonder;[citation needed] the audience is generally aware that the magic is performed using trickery, and derives enjoyment from the magician's skill and cunning.[citation needed] Traditionally, magicians refuse to reveal the secrets to the audience. The reasons include:

Exposure is claimed to "kill" magic as an artform and transforms it into mere intellectual puzzles and riddles. It is argued that once the secret of a trick is revealed to a person, that one can no longer fully enjoy subsequent performances of that magic, as the amazement is missing. Sometimes the secret is so simple that the audience feels let down, and feels disappointed it was taken in so easily.
Keeping the secrets preserves the professional mystery of magicians who perform for money.
Membership in professional magicians' organizations often requires a solemn commitment to the "Magician's Oath" never to reveal the secrets of magic to non-magicians.

The Magician's Oath (though it may vary, 'The Oath' takes the following, or similar form):
"As a magician I promise never to reveal the secret of any illusion to a non-magician, unless that one swears to uphold the Magician's Oath in turn. I promise never to perform any illusion for any non-magician without first practicing the effect until I can perform it well enough to maintain the illusion of magic."
Once sworn to The Oath, one is considered a magician, and is expected to live up to this promise. A magician who reveals a secret, either purposely or through insufficient practice, may typically find oneself without any magicians willing to teach one any more secrets.

However, it is considered permissible to reveal secrets to individuals who are determined to learn magic and become magicians. It is typically a sequential process of increasingly valuable and lesser known secrets. The secrets of almost all magical effects are available to the public through numerous books and magazines devoted to magic, available from the specialized magic trade. There are also web sites which offer videos, DVDs and instructional materials. In this sense, there are very few classical illusions left unrevealed, however this does not appear to have diminished the appeal of performances. In addition, magic is a living art, and new illusions are devised with surprising regularity. Sometimes a 'new' illusion will be built on an illusion that is old enough to have become unfamiliar.

Some magicians have taken the controversial position that revealing the methods used in certain works of magic can enhance the appreciation of the audience for cleverness of magic. Penn and Teller frequently perform tricks using transparent props to reveal how it is done, for example, although they almost always include additional unexplained effects at the end that are made even more astonishing by the revealing props being used. Val Valentino, as "The Masked Magician," revealed a number of secrets in a series of four Fox Network TV specials. The reason Penn and Teller is held in high regard among magicians, while Valentino is despised, is that the former only expose pieces that they themselves have created for the purpose of exposure, while the latter expose other peoples' creations against their wishes without even mentioning their names.

Often what seems to be a revelation of a magical secret is merely another form of misdirection. For instance, a magician may explain to an audience member that the linking rings "have a hole in them" and hand the volunteer two unlinked rings, which the volunteer finds to have become linked as soon as he handles them. At this point the magician may shove his arm through the ring ('the hole in the ring'), proclaiming: "See? Once you know that every ring has a hole, it's easy!"