Live data from Hacker News

Accused spy Alexander Yuk Ching Ma evidently beat the polygraph

antipolygraph.org

1–10 of 196 posts

Re: Accused spy Alexander Yuk Ching Ma evidently beat the polygraph

#7
My understanding is polygraphs are used as a tool to have people trip over themselves by using it as a prop when the administrator thinks they have something to catch them on.

Now that makes me wonder, if they don’t use fMRI is it because it’s also just a prop but with more studies behind it?

Re: Accused spy Alexander Yuk Ching Ma evidently beat the polygraph

#8
post #5

KGB did not use or believe in polygraphs. Always found that an interesting comparison to American intelligence.

Does anyone outside the US use or believe in polygraphs?

Yes, unfortunately. The governments of the following countries, among others, rely on polygraphy to varying extents: Canada, UK, Israel, Russia, Ukraine, and China.

Re: Accused spy Alexander Yuk Ching Ma evidently beat the polygraph

#10

Ah yes, polygraphs, long proven nonsense and not used in virtually any other western country. I wonder how he beat that?

I'd guess that polygraph tests need belief into them working, thus making it work. Polygraphs should be able to (at least) measure nervousness correctly (e.g. due to transpiration), so if you believe polygraphs may work you're probably someone on which they will work (1).

In other words, long proven nonsense as long as you don't believe in it.

(1) https://antipolygraph.org/lie-behind-the-lie-detector.pdf (Chapter 3)

Post reply on HN