[dboreham]

I'm skeptical about this. Although I have been a Linux user since 1992, in my (fairly wide) experience Linux was not used in commercial settings until around 2000. Len was a professional developer working for SV companies during that period. So was I. I did have colleagues with no Windows experience, but they would have been Solaris users (or HPUX or...). Anyone writing code to be used by regular end-users would have had to have targeted Windows because there simply wasn't much of any installed base for any other OS at the time. Plus, according to the Medium article, Len worked on the PGP codebase. PGP ran on Windows (Win32, not sure about Win16).