Gee, I'm trying to understand how the cart works and how to explain it to others. You're just trying to be an ass.
-- Roger
I think after 4000 posts in this thread alone they feel like they have explained it. In other words, your persistence in trying to improve on what they feel has already been done is a bit grating. At least that's the impression I get.
Really, if you want someone to understand I would point them to the Wired article. It is a good introduction to the problem and the solution. I'm sure if I read through more of the online threads Spork and TAD have more technical explanations out there, but the Wired article is the best place for a layman to start.
http://www.wired.co.uk/magazine/archive/2011/04/features/faster