I would like to say how wierd this guy is...
1) He appears to have 2 aliases. (Dr.) Marvin Candle - In the Swan Orientation and (Dr.) Mark Wickmund - In the Pearl Orientation.
2) He appears to have a fake Left Arm in the 'Enter 77' video after Locke beating the chess game and in the Swan orientation Video too. But in the Pearl he doesn't appear to have a fake arm.
Swan Orientation =>
YouTube - Lost - Dharma Swan Orientation
Pearl Orientation =>
YouTube - Lost - Pearl Orientation
Enter 77 Clip =>
YouTube - Lost: Locke and the Chess Game - Enter 77
So .. what I want to know is why is he giving himself 2 names? and How has he ''LOST'' he left arm? if he has..