This is one of the most faked expressions. It is not an uncommon sight to see people that loathe each other smile when they meet and shake hands. Behind these smiles are deathly groans and wild thoughts of terminating each other. Happiness is faked because it is taken to mean that there is harmony, understanding, joy, and cooperation among many other things. It is very important for a social engineer to tell the difference between an actual and a fake smile. Fake smiles have long been a subject of curiosity and a study was done about them in the 1800s by Duchenne de Boulogne.
Using electrodes on a man's face, he triggered the muscles responsible for smiling and was able to determine the difference between a real and an induced ...
