A few years back a TV series became named “Lie to me” became very popular. In that show the protagonist was an expert in telling who is lying and who is not based on body language. The show gained popularity as the prospect of being able to tell lies just seeing facial and body movement seemed attractive. In the article given this week, we saw that how the lie detector or polygraph machine is not 100% correct. There are indeed many ways to manipulate the polygraph by changing the reactions to the questions. Criminals who are pro can easily do that. On the other hand, when an innocent person is blamed, even he gets tensed and that might get reflected on the polygraph