Or if you're pressed for time, the following short TED Talk also explains the realities well: http://www.ted.com/talks/pamela_meyer_how_to_spot_a_liar.html htt

Or if you're pressed for time, the following short TED Talk also explains the realities well: http://www.ted.com/talks/pamela_meyer_how_to_spot_a_liar.html http://www.ted.com/talks/pamela_meyer_how_to_spot_a_liar.htm...