Yep. Spot and I hung out together at CMU, when he was working with Andy Witkin doing amazing graphics stuff, and I was working with Brad Myers doing Lisp user interface stuff. That was when I finally bit the bullet and learned X-Windows so I could hate it better, and started porting SimCity from NeWS to TCL/Tk. (The unix-haters X-Windows chapter was the result of that.)

https://www.cmu.edu/homepage/creativity/2012/winter/spot-on....

https://www.cs.cmu.edu/~aw/people.html

http://www.donhopkins.com/drupal/node/69

http://www.art.net/~hopkins/Don/unix-haters/x-windows/disast...