Recently, on alt.magic, someone asked about Roy Walton's "Card Warp" and whether it was dirivitive of Bob McAllister's "GreenWarp," since the person had learned "GreenWarp" off a McAllister tape and had seen no credit of Walton.
Among others responding to this post was Peter Duffie, and I chimed in as follows:
>> One of the unfortunate things about videos, and people learning tricks from videos, is the matter of attribution. As one of the video reviewers for Genii magazine, I've thought a lot about this. (Maybe I'll start a thread on the Genii Forum board.)
Bob McAllister's "GreenWarp," from Richard's Almanac, credits Roy Walton's "Card Warp," but I'm not sure what Bob put on his video.
Many people associate Michael Ammar's name with everything from "MacDonald's Aces" to "Impossible" because of his videos.
The generosity of the great Roy Walton in allowing his great trick to be taught without compensation is rewarded with a diminished recognition for his having invented it. Of course, a trick can't be copyrighted, only the original language used to describe it can be so protected.
Our personal responsibilities in this regard is quite another matter and is something worthy of every magician's thought. <<
What do you think?