So, it was quite obvious that Richard was scared of 'John' after he found out that he wasn't the real John Locke, Richard must have known that he was the 'Monster'. When 'John' walked out of the statue's foot, and said that Richard looked different with the chains off (or something along those lines), it must have clicked in everyone's brains that Richard was a prisoner, or a slave on the Black Rock and I know that I started wondering why Jacob chose Richard to not age. But I'm wondering why 'John' knocked Richard out, and started walking away with him. What is 'John' going to use Richard for? And how important is Richard, he might be a lot more important than we imagined, and we must have imagined him to be pretty important since he never ages.