I like to think that I am at least a little open minded, and have always allowed that DC is a possibility. Skeptics are always asking for proof, slow motion video, actual observation of a deviation from random that is not allowed for in probability, etc. etc. But it seems to me that any attempt at proof, runs into a problem. As the visibility of control diminishes, it almost certainly will reach a point of virtual invisibility. I use the term invisible, to mean attempting to identify "control" from "random"....where the difference is almost indistinguishable. A point where it almost becomes faith...maybe. For example, one can roll the dice a few inches, and achieve almost perfect control, as the distance increases, the control diminishes. As the "barriers" increase, table surface, back board (pyramids), the control further diminishes. Add in the flaws of the DI, and at some point, we reach some level of invisibility between control and random. Identifying that minute "influence" becomes extremely difficult. With enough, what ever enough means, trials, one could probably establish some confidence level that satisfied the skeptic, if the standard deviation was such that it was outside random expectation. The larger the influence, the easier that becomes, but for the most part "large" influence is non existent, as relates to, in the casino bank craps...if it were, the casinos would not tolerate it for a second! So, for the amateur DI, this proof is most likely beyond their capability, both in numbers, and time required to turn the invisible into the visible through "Confidence level statistics". I have heard claims from some of the DC gurus, that this has been done, but yet to witness it. There have also been challenges played out, but the trials were far too small for establishing "visibility" to a point of proof. Maybe the "art" is intended to remain invisible, and much like religion, the DI's visibility is as much a matter of faith as any need for a proof. With this view, I probably can accept that, and doubt I will ask for proof from anyone claiming DI skills, in the future. But, if you are selling the concept, I reserve the right to.......oh, never mind.