I wrote a similar (2 series) article a while back that attempts to explain the same thing, but with a few diagrams. I know sketching out what was going on really helped me ...

http://www.looselytyped.com/blog/2012/08/18/on-prototypal-in...

http://www.looselytyped.com/blog/2012/08/22/on-prototypal-in...