Hard disks are getting amazingly large.

It's been obviously coming for a long time, but I agree with this post that it seems like an historical milestone that we now can buy internal hard drives that hold one terabyte of information (external ones that large have been available for a while). That's 1,048,576 megabytes or 1024 gigabytes. When I was a kid computers didn't have any hard disks at all; everything had to go on floppy disks that held 64 or 128 kilobytes = one eighth of a megabyte. My Dad's first hard disk (in the 1980s) held 20 megabytes, and seemed unbelievably huge at the time. A one terabyte hard disk is over 52,000 times larger than that. And cheaper too. It can hold over a quarter million songs, or 1000 hours of video. We live in amazing times.