So on Quora there is an author named Franklin Veaux. He writes answers and comments on a lot of different topics and generally seems to have a good head on his shoulders and knows what he is talking about. One such topic that came up was the future of computer architectures with regard to system memory and offline storage. Today’s modern computer systems utilize smaller amounts of primary RAM for system storage, which is fast but volatile; and larger amounts of persistent storage which is slow but is… well, persistent (via things like removable discs, and magnetic rotational or solid state drives).
As we make advancements in memory technologies, it is conceivable that we will eventually end up with a memory technology that has the density of persistent storage, and the speed of volatile memory. When this happens, the differentiation between system RAM and persistent storage may start to blur, or go away entirely.