We can also comment on Daniel Madison's newest effect the Avocate and whether or not that is really something original or not.
Damm.... i sound like i'm bashing Daniel Madison but i dont mean to. I just think the intellectual property argument needs to be explored more.
It is always a bit tricky with intellectual rights. Easier to protect an effect than a method. You should all read "Hiding The Elephant." We think things are cutthroat today? Nothing like in the golden age.
The Advocate is one of the most straightforward designs for a "you know what" ever devised. I have explored many designs for such a device dating back to Annemann. I have never seen anyone simplify, and thus make more practical, the design as much as Madison. When you see the design you will think someone MUST have thought of that before...and yet every design I have come across prior to that was much more complex and bulky than the Advocate. First off...the Advocate has been around for several years. The original book dates back five years at least.
My guess is it is original because people had just forgotten them and when they were in more common usage people performed in suite coats more often. Thus, the older, more complex, and bulkier designs were not as big an issue. As people started performing without coats pocket space became a bigger issue and I think people just forgot about them. So Daniel Madison's main contribution is streamlining the device and make it practical for people to use them with limited pocket space.