Sanders just said he’ll bring a Lie detector to the Presidential debates.

Ok, I know this was just to get a sound bite, excite the Democratic base and and rattle the GOP. The message is that if Trump lies, he’ll be called out on it. And I have no clue if he understands the science behind this gizmo from the 50s.

But, Lie detectors are proven to be incredibly unreliable devices to gauge whether a person is telling the truth. Their results are literally a 50/50 chance of being correct, so as good as a coin toss. It measures your body’s response to question and answers, which can be controlled by practice, breathing technique and in other ways to sway the result.


Someone please correct me if I’m wrong, but lie detector results aren’t even considered as evidence in criminal trials (right?).

This is really nit picking. But what bothers me is the party of science and reason shouldn’t promote bad science. Again, really being nit picky here...

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