Sometime in the late ’80s I convinced my parents to get an external hard drive for our Mac Plus to augment our extravagant two floppy disk drives. We got a 70MB drive for about $400, which is about $500 in today’s dollars. Now you can get 2TB for $100, or 10TB for $500. This is an increase of about 14 million percent in about 20 years! Talk about technological change! I have no doubt that this growth - that storage is now basically free - can enable incredible new technologies. What can we do with this?