Re: This article is more interesting for what it tells you about...
> they are not mainstream beause Android is useful as a touch UI. iOS is useful as a touch UI. they don't translate back well, and vice versa for traditional OSs.
Absolutely. Wasn't there a once a Windows laptop that could switch to Android (for quickly checking one's email inbox without draining the battery)? I seem to recall the software attempted to make it easier to swap documents between the two OSs. Or maybe I ate too much cheese before bedtime.
Apple's approach is to keep one UI per device, and to use iCloud and 'Continuity' to allow a person to start writing an email on an iPhone, and finish it on their Mac - without digging into the 'drafts' folder.
The idea in the article - use an Apple TV to let an iPhone ape a Mac - is amusing because the first AppleTVs could be made to run OSX, essentially making them low-powered MacMinis. http://www.appletvhacks.net/2007/04/01/mac-os-x-running-on-apple-tv/#.VGNBdvmsXQo
With things like Intel's NUC form factor, we essentially have headless laptops that could be slung in a bag and plumbed-up to the nearest TV.
Another thing that tickles me is that nobody in this thread has cited the 'netbook' formfactor - it's as if they never existed! You wouldn't want to write a novel on one, or even browse the web for long, but you could if you had to - for a device that would fit in a big jacket pocket. Tablets and 'ultrabooks' largely stole their lunch, but they are handy for connecting external peripheral devices and cheaper than 'ultrabooks'.