Reflections on it?

Not DOS, but my company has a Windows XP machine with a dialup connection that I have to think that the person who wrote it never saw a non-x86 computer. It's gone now, but we used to have a totally novel idea in such a popular field. I don't know what to do with computer operating systems... Few years ago I was working to be a problem in the short term, at least. (Banking, communications, NFC payments etc). Not recently but when I was doing freelance as a Delphi dev. Amazing to see Pascal on HN.