Yes, it's true, a polygraph test is definitely something you can work at to defeat. But keep in mind this is a moving target and it's not just a magic box with binary Yes or No.The whole process and environment is highly controlled from the moment you walk in. And these days the tech behind it is so much more than blood pressure or the measurement of sweat. Insurance companies and various government departments, for example, route phone calls through AI programs that can detect lies from speech alone. There are other methods and it's the sum of all these methods that is likely to trip most people.Also, prior to a test, a lot of people start revealing facts in the hope it mitigates or exonerates them from the lie detecting process.If we look at what happened with Blockstream and the Lightning Network, many might say it was an inside job to thwart bitcoin's progress. How can dash protect from such thing?