As in "Everybody accepts that the science behind the lie-detector is accurate. (Except a few skeptics, and they are nutjobs)"
Sorry the polygraph is a voodoo interrogation device. If few of it gets the subject to confess, OK. But you can't rely on the results it generates.
There's a growing trend on FR for people just to dogmatically believe whatever they want to believe without the slightest consideration of actual evidence, or that they might ever be wrong about something.