The problem is not the idea of a registry, but that you can screw up your system by changing it.
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Unless you go into dev mode (which quite annoyingly.. a lot of Chromebooks, like my own, make this somewhat difficult to achieve), you don't see any filesystem. ChromeOS's security mode make the OS immutable, user settings are on a special part of the FS and encrypted - not trivial to mess with.
All you see in ChromeOS is the Chrome web browser, and something like two extra settings on the settings panel (wifi, wallpaper background) that don't exist in the one you download for a 3rd party OS.
Interesting. I have a Chromebook and yes, it is literally just Chrome. However, I end up using it more then any other laptop I've ever had. Chromebooks run only one application - Chrome. But they run it really, really well.
It also routes you around traffic accidents. That's surprise traffic. There is really no doubt that using GPS can save you time, but I don't use it for commuting. And it has definitely burned me before with surprise traffic due to wrecks. [I just realized that Google Now notifies you of traffic without having to open up any app. :) Probably should start taking advantage of that.]
Sure, resolution is important. But the screen is too small, and there is no way around that on a watch.
The features of this watch very strongly overlap with the features of a smartphone. I can see maybe a watch replacing a smartphone one day, maybe interacting with a display embedded in contact lenses (to get around the limitation of a small screen). But I don't know if I'd get a watch (don't wear any) if I always have my phone with me anyway and the lock screen of course tells the time in real big letters.
Technology makes it so society has to spend less human labor for equivalent economic output. The obvious answer is not to create pointless jobs, but for people to work less.
Maybe the whole goofing off thing is representative of the fact that increasingly people do less actual work when at work, because there is less actual work to do.
Windows Phone has no hope of ever being relevant. It's chasing a market that has already been claimed by very strong companies. It's about as likely as OS/2 or Linux winning on the desktop [and I say that as someone who really likes Linux on the desktop, posting from Ubuntu right now.. :)].
The only way to win against Google or Apple, is to not try to compete with them at all. How? Make a technology that makes the smartphone obsolete.
This applied to competing with Microsoft too by the way. Google and Apple got on edge over them by bypassing the idea of competing with their core competencies (desktop OSes), by creating a market that largely didn't exist (smartphone OSes) and growing that to be arguably more relevant that Microsoft's traditional market. What is good for the goose is good for the gander.
We are still in the stone ages of computing. As such, it's largely pointless to enter markets that are already occupied, when there is so much left yet to be invented. Of course, creating an entirely new technology that changes the world is hard. It requires a great deal of creativity and ingenuity. And arguably a strong desire to push the human race forward.