Earlier quoted context omitted.
> What are the chances of an actual spy being able to beat a lie detector? I'd say not even remotely close to 100%. What is an "actual spy"? Those people are often regular employees with zero relevant training, that are simply recruited by a foreign intelligence agency via pressure, money, or manipulation, and are targeted based on their access to information. I'd say that a huge percentage of them won't be able to b…
What you are referring to are embedded assets. Embedded assets are different than trained spies in intel or counter intel. A trained spy may be a handler of assets but they generally do intel work themselves and usually have some form of cover. A trained agency spy will undoubtedly be able to beat a poly and are trained to do so, on a regular basis. While the accuracy of a poly is too low to be usable for the discern…
In the context of this thread, Alexander Yuk Chung is definitely not what you are calling "a trained spy", but an asset that was recruited by Chinese intelligence almost 20 years after joining the CIA. Like I said - there is no reason to believe that most of those would be have any sort of training relevant to passing polygraph tests.