I have been braced for the fact that the move to Yosemite on my MacBook Pro would be unpleasant, but I have to confess that I was unprepared for the quantum leap in unpleasantness that I would face. The bottom line is that Yosemite is such a mess that, for the most part, Apple's own Help Desk staff are powerless to be of much assistance. In this brave new world the only assistance comes from discussion groups, and the best ones are the ones not based on Apple Web sites. Thus, when I had to contend with an installation that hung after only 50% of the new system had loaded, I discovered that I learned most of what I needed to know by reading discussion groups while waiting on hold. My telephone connection went through right about when I figured out what I had to do, which means that, at least, I was able to verify the validity of my actions before taking them (with a guy who could barely articulate his words clearly, possibly as a result of battle fatigue). Since then I have had to contend with folder management taking over my entire machine and a Java inconsistency that interfered with my using a piece of software vital for my Examiner.com activities. The latest had to do with iTunes starting spontaneously, leading my wife to ask why she was hearing music coming from the computer room while I was out of our condo.
There has been word in the technology news that Tesla has been recruiting Apple hardware talent. I hope they are not doing the same for software. The idea of cars out there on the roads running software written by the folks that brought the world Yosemite makes my blood run cold.