Members of sherpolygraph,

The only humorous thing stemming from your post is the obvious bluff and your empty bravado evidenced by the fact that none of the members of your self-esteemed group has managed to muster the courage to accept the countermeasure challenge posted on the home page of this site.  Actions speak much louder than words.  The ball is quite clearly in your court--either continue to be easily manipulated by examinee countermeasures or demonstrate publicly that you cannot be.  

I suppose there is one additional minor point of humor in your post...your presumably rhetorical question about whether you need a polygraph to know whether someone is lying would appear to be either irrelevant (yes you do need it) or a tacit admission that it (the polygraph) serves as nothing but a prop (no you don't need it).