A commenter linked this video clip about Martha Nicholas, the sociopath who scammed people into believing that she had cancer, in response to my recent post:
Observe the way Martha's voice almost breaks as she says she may not see her son again. Look at her sincere expression as she speaks about her terminal diagnosis. Admire Martha's bravery as she announces that she is a three time cancer survivor and a current cancer fighter.
These whoppers are delivered with none of the hesitation that a normal person would have when lying.
If you were unfamiliar with sociopaths you'd have had absolutely no reason to doubt her.