This video with a former FBI agent about how they interpret body language was interesting to me: https://youtube.com/watch?v=4jwUXV4QaTw https://youtube.com/wat

This video with a former FBI agent about how they interpret body language was interesting to me: https://youtube.com/watch?v=4jwUXV4QaTw https://youtube.com/watch?v=4jwUXV4QaTw Lie detectors are basically like one of those body language tells. They don't tell you if someone is lying, but they can give you a hint as to how someone is feeling that might be useful in deciding what lines of questioning to pursue further.