sackett wrote on Apr 4
th, 2008 at 2:25am:
No diversion from that sad fact, but what about the 4,000 other polygraph examinations that were properly administered that day? No, let's not bring that up...
If there were 4,000 other polygraph exams conducted that day, what makes you think they were all "properly adminstered"?
How can you possibly have any idea in what percentage of those tests a truthful person was deemed deceptive, and/or a deceptive person was deemed truthful? Do you truly believe that out of 4,000 tests there wasn't a single false positive or false negative?
It seems that if someone fails a polygraph and claims they were telling the truth, their feedback is ignored by the polygraph industry because, clearly, if they were telling the truth they would have passed. It is abundantly clear that personal accounts from people who say they told the truth and failed are given no weight at all by the pro-polygraph crowd.
If a person lies and gets away with it, their feedback would itself be deceptive, because they certainly aren't going to turn to the examiner who just "passed" them and admit they lied during their test. I'm sure every polygraph examiner is fully aware that there is virtually no chance of something like that ever happening.
So, exactly what feedback is the polygraph industry receiving that enables you to confidently assume that the 4,000 other polygraph tests conducted that day were properly administered?