Adobe’s co-founder has passed away at the age of 82. It’s a very sad day, folks: John Warnock has passed away at the age of 82. Most people probably don’t know him by name, but if you are using a Mac today, you have to be grateful for his existence because it was Warnock who helped the once-doomed Apple Macintosh bloom into the cornerstone of the 1980s desktop publishing revolution thanks to his PostScript page description language.