The stack heap is a bit of a jab at the harvard architecture in general.

I see memristors as being closer to a Von Neumann architecture. http://en.wikipedia.org/wiki/Von_Neumann_architecture

Even then its not a perfect analogy admittedly. Sorry for the confusion!

I guess a better analogy would be able to be get rid of the idea of "loaded into memory" versus "in ram" versus on permanent storage.