[tophat02]

The biggest change will not be the HDD -> SSD transition, but rather the SSD -> MRAM transition or, equivalently, the point at which there is suddenly no speed difference between RAM and secondary storage.

At that point, there WILL be no secondary storage. Or, rather, CPU cache will become very large and be the primary storage and (M)RAM will be the secondary storage.

In either case, given that CPU cache is (designed to be) transparent, the whole computing landscape will be irrevocably altered.

Think about it... what would a computing environment look like if it was based around a system in which all your data and code was just as instantly addressable and accessible as all your other data and code, and it was just ONE address space?