I'm less of a PARC fan and more of a Lampson fan. In fact, I'm a huge Butler Lampson fan. I've read his PARC valedictory Hints on Computer System Design many times and he's updated it recently. He went from PARC to DEC SRC (maybe 5 miles). I saw him give a talk at SRC and for about 15 minutes afterwards, I understood.

Hints is the favorite paper of a lot of my heroes like John Regehr.

https://www.microsoft.com/en-us/research/wp-content/uploads/...

http://bwlampson.site/Slides/Hints%20and%20principles%20(HLF...

http://blog.regehr.org/archives/1143

From SRC, he went to Microsoft and he also taught at MIT.

https://ocw.mit.edu/courses/electrical-engineering-and-compu...