"Reality is not always black & white."
Dual reality is often frowned upon within the close up arena. This is very likely the result of poorly constructed routines which don't adequately address the balance of perspective between both volunteers and spectators alike.
Duality seeks to address that balance and offers a carefully constructed routine where by you are seen to reveal a random four digit number that your spectator is merely thinking of.
The true value of this piece lies within the various principles and tools which are taught within the framework of this effect. These principles alone are worth the price of this ebook, and may be applied to countless routines within your own repertoire.