so are 90% of packet tricks, coin tricks, card tricks and expensive illusion's you sell.
so should we just tell every one how to do all the coin and card tricks so we don't have to work for a living

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I'm suprised that a person of your experience and interlect felt it was ok to give away a trick just because you have already read about it years before, most classic illusions are based on well published principles, should we start giveing thease secrets away too, after all why should we make a profit from old principles that we have read before.
your absolutely right no one should profit from magic already published, so the sword cabinet uses......and the substitution trunk uses......
yeah like I'm going to wreck my bussiness...no way in this life time.