Please note, though, that I’m not claiming to be entirely happy with the Modern Document Model. Actually, to be quite honest, in my view, Auto Save is itself a massive mistake, an utterly erroneous pretense that the desktop is like iOS. Its deeply flawed nature is well revealed by what happens when you edit a file on a mounted remote disk: you get Auto Save without Versions, which even Apple has admitted is troublesome;
While I don't agree entirely with Matt on this, the article is awesome. And the length of it is the reason I'm shying back from giving the Lion / Mountain Lion to my parents just now. It clearly feels like a transitory stage, that will continue to transition in small naggy iterations.