Quote:
Originally Posted by
uNiCoRnPriNcEsSx 
if you need to read a book about how to do this stuff, you're doing it wrong.
just talk to people. within a few month's you'll know intuitively whether they're lying or not. reading body language is key, as well as analyzing motives
So everyone who has engaged in conversation regularly over a period of several months can intuitively detect lies? I wonder why people bother with polygraph machines or even trials if there are so many all knowing truth truth arbiters out there?