You need to know exactly what you're getting here, so I will point out where the ad copy is
misleading. There is a claim that you don't have to "tear up" the prediction in order to gain the
information. Perhaps it is the word "up" that makes the marketer believe this to be a true
statement, because you absolutely DO have to tear it.
As a result, the assertion that you
"end clean", is not true. You can not hand the billet back to the spectator, because it not has a
tear in it.
Yes, this tear is supposed to be surreptitious, which means it must be done
silently. This seems like a bit of a challenge.
I will concede that the mechanics of the
handling are well thought out, and reasonably well-illustrated and explained. However, if you're
already comfortable doing peeks and center tears, I don't know if this is really any better. At
least with a center tear, the billet has been (supposedly) destroyed; with this technique, you're
holding the billet the entire time, so a spectator seems more likely to think that at some point
during the routine, you were able to sneak a peek undetected.
I don't think I would ever
use this, but it warrants a decent rating because some good original thinking went into it. Some
may find it worthwhile.