When I was newly married, back in the late ’80’s, I paid $880 for a Plus Systems 80 Megabyte “hard card”, a hard disk I could slip into the expansion slot of my IBM PC AT clone, more than tripling its storage capacity, for a cost of $11/megabyte.

This morning my computer was acting oddly, and I decided I wanted to make a complete backup without overwriting my existing backup; so I went to Office Depot and bought a new backup drive. It’s a 1 Terabyte drive, for which I spent approximately $98, or $0.000098/megabyte.

Now that’s progress.