I don't recall saying tablets or touch are fads. I do recall saying that I don't personally have a use for them, that W8 is optimized and well-suited for touch systems, especially content consumption devices, but at the expense of non-touch systems.
Cars? I'm violently opposed to anything that requires taking eyes off the road. I can operate my heater, air, audio, lights, etc by touch, because the controls are physically tactile. I don't have to look at a screen, scroll through options, hit the stopped vehicle in front of me...
Touch makes plenty of sense on ATMs and other single-purpose kiosks, partially because no one spends their entire day working on an ATM or reserving hotels at a travel stop kiosk, and there are only limited types of data and transactions involved.
As to initial designs being inferior, the same could be said of the W8 interface. It's MS's first shot at this, and their history shows every reason to believe it will be much more refined in the second version.
There seems to be enough market demand for having left things alone to generate a viable market for third-party augmentation. I'll swallow this pill, but there ain't a big enough spoonful of sugar, Mary Poppins.
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