Z:gnu-www-ja-google-engineering-talk--f979a7-I realized that I could take t/en

I realized that I could take the best ideas from the various systems I had helped develop or use and add my pet ideas and make my dream operating system. But this would have been incompatible, and the users would mostly have rejected it, saying "it would be too much work to switch, so we're just not going to." So, by making the system upward-compatible with UNIX, I could spare the users that obstacle and make more of a chance that users would actually use the system.