How to Cheat at Everything: Tips from a Con Man
It requires avid study of psychology and body language. It’s an amazing paradox—a con man has incredible emotional insight, but without the burden of compassion. He must take an intense interest in other people, complete strangers, and work to understand them, yet remain detached and uninvested. That the plan is to cheat these people and ultimately confirm many of their fears cannot be of concern. Mr Lovell draws people in by mirroring their body language. He breaks their defences by entering their physical space.
(via kottke)