Ken
I dont think there is any proof. As far as i'm aware, the book all came from Don Young for the purpose of testing his system. His system was $10,000, and his guarantee was it would beat the 10,000 spins from zumma. But the problems are rarely are bets even qualified. And any system can easily be built around set spins to win.
I have his system , still have it somewhere. As i recall I think the publishers for Zumma and Don's book were the same, which I found a bit odd.
I had the book years and years ago, tossed it in the trash.
Ken
despite the weeks past events i will answer.
i share the same concern that zumma may not be "true"
however i believe deep down that it is
my reasoning for it has to do with columns
i possess american zumma
if you look at wheel layout column 1 is scattered while column 2 and 3 are clumped
i notice in live play column 2 and 3 are much more streaky then column 1. makes sense based on wheel layout (talking about american wheel here)
zumma reflects this anomaly
at the end of the day column 1 is up there with 2 and 3 but the streaks of 2 and 3 outweigh the streaks of 1 in zumma
based on wheel layout and expectations of what to expect and when to expect it i believe the american zumma book is real spins
thats my story and im sticking to it
see attachment of live wheel...wheres 1?
thanks for moderating me by the way...u wont have to approve my posts often...