If you answered that question by muttering, Windows, obviously, then you are wrong. Instead, look at the little device in your pocket for a clue. All right let me make it easy for you. Unix. Paul McCellan over on the Cadance Community website makes a case for Unix, with a little history lesson. It is worth a read.
Google I/O is as good as any time to take stock of the disparate and polar opposite ideologies of Google and Apple when it comes to machine learning and privacy. And nowhere it is more evident than in their respective photos apps: Google Photos and Apple Photos.