[james_s_tayler]

I've started just explaining it to myself. You don't need to actually teach it to someone.

In fact this is kind of a subtle point. There are two functions that teaching it to a third party is performing. The first is that of burning the material into your memory and the second is getting to an exposition that the third party understands.

Well... the second part is not necessarily necessary. It depends on your goals, but let's say you are only trying to further your own understanding then perhaps all that is really required is getting the material into your memory in a robust way. Just explaining it out yourself enough times to actually wire all the nuerons up in a complete graph is massively beneficial.