The sum total of human experience

I just had to put in a quick reference to this circa 1985 $40,000 hard drive with a whopping 40MB of capacity. But according to the simple mathematical extrapolation of growth, we’ll end up with sugar-cube sizes hard drives that can store… well, everything. Or will we? Sooner or later we’re going to run out of space — in the quantum direction. So, we’ll likely crack storage at the molecular level, then perhaps the atomic level, and what happens after that? (Lots of interesting things, most likely).