> "most computers running X run just four programs: xterm, xload, xclock, and a window manager" : the intervening 20 years have added a web browser. Almost all

> "most computers running X run just four programs: xterm, xload, xclock, and a window manager" : the intervening 20 years have added a web browser. Almost all software run by the user is in either the xterm or the browser. Don't forget random enterprise software installers that insist on a graphical mode even though they could never successfully be operated by someone who isn't comfortable on the command line