Before those came along I was perfectly content using a computer with 4 or 8 GB of RAM or less and thought that ought to be more enough for anything I wanted to do with computers for the rest of my life. Now I find myself wondering how much more RAM and what new GPU I am going to need to run a model with tens or hundreds of billions of parameters. A few years ago I might have agreed with those who say the personal computer revolution has long been over. Indeed there was a long period with few new milestones or innovation. But now I see that that sentiment was mostly a failure of my (and their) imagination.