*I wonder how many functional Xerox Altos exist after 40 years. At least one.
https://spectrum.ieee.org/view-from-the-valley/tech-history/silicon-revolution/the-xerox-alto-struts-its-stuff-on-its-40th-birthday
But, it turns out, the Alto had feature or two that got left behind when Steve Jobs and others were grabbing at all of its bits and pieces and turning them into mass market computers. The one that got probably the biggest gasp—a “wait, I want that” reaction from the crowd attending the demos live—was a feature called “Replay” that was part of the Alto’s word processing system.
(...)
The original business plan for the Macintosh computer was written at Parc on an Alto and printed using Parc’s Dover laser printer, Shoch reported. As was the screenplay for the movie Tron.
