J.B. McCloughan wrote on Mar 7^th, 2002 at 10:09pm:

George must prove, with substantiated evidence of comparable scientific disciplines, that polygraph is not scientifically valid.  It is his assertions and this discussion is based on those and the past rules of discourse he has used

Nope, no sir. No way. You cannot prove a negative, it is a Logical impossibility. The burden of proof rests squarely on your shoulders. Thus far, I'm not convinced.