Do me a favor and read this description of Tom's model. http://wiki.my-big-toe.com/index.php/The_MBT_Model_Link_Page
Then come back and ask specific questions. I seriously think that this is a better way to get answers for you than to try to fight through metaphors when Tom is not available very often. Of course, if you do not have some concept of mathematics and digital technology, this will not help, but you don't need a lot. If you can think in terms of this kind of metaphor, as you don't have to actually do any math, it is more concise than talking about a little bit of AUM and sharing memory space as metaphors. If you read this and still have these problems, we should at least have a more specific spot in your understanding to work on.