>That said, 8EiB is about a couple orders of magnitude or so higher than even today's high-end RAM usage.
And the fart of a flea is also a couple of orders of magnitude quieter than a jumbo jet at take off.
The 64 bit address space is really big [citation needed].
The Titan supercomputer at oak ridge is the current largest by RAM. If you decided that you needed you needed a million times more RAM to play the latest version of Crysis, you are still an order of magnitude from running out.