The author is Ron Garret. He was also interviewed last year on the CoRecursive podcast about the merits of Lisp at JPL, and the opposition to it. It’s worth listening to:
Unrelated, but I noticed the podcast's volume control applies the volume change on mouse release of the volume slider. It prevents adjusting the volume with audio feedback and you have to guess where the slider knob should be.
https://www.corecursive.com/lisp-in-space-with-ron-garret/