Anybody who knows what an interrogation is versus what a test is, even if only from the meanings in a dictionary, should be well-schooled after reading TLBTLD and reading the posts here.  Even a minute's pondering of the process of the poly should make someone realize that there's something fishy in the whole thing...

FYI, a test, oral or otherwise, seeks a known truth(s).  When was WWI ended, and by what?  What is dropped every New Year's from a pole in Times Square?  Simple.

A poly seeks BFB... and uses massive doses of extrapolation, together with the 3rd degree and speculation regarding irrelevant "norms", to piece together something less than even a criminal profile.  BTW, John Douglas does a lot better with his profiling than Mr. Gelb with his rhabdomancy...