Bleah, this page is a mess, the perfect example of a wiki gone wrong.
> I don't think you'll find anyone claiming Plan9 is a refactored Unix. It's always been a proud start-from-scratch effort.
Bah who cares about the implementation details, it is still considered to be the "successor" of Unix as it takes the same concepts but goes further with those concepts.
> My lament is that, at this point, Plan9 is dead in the water and its team members are using Unix in their day jobs again. If it had followed a longer, more conservative schedule, maybe starting from a working Unix base, it might have seen more success.
Maybe, but note that Plan9 stayed proprietary during a long time even when there were Free implementations of Unix..