this just proves it's it.
Edit: I've just re-read the following post of mine and think it might sound a little _too_ pathetic. Hm. If you want to, skip it. 
You don't seem to understand the meaning of the word "proof". Nothing is what it proves. It _hints_ at things that might or might not make it to your personal computer in the future.
I'm sure there are quite a few concepts of how we might interact with computers in the future. For example, Apple's had speech recognition since the Macintosh Quadra, a line of 68K-based computers introduced in 1991 (although I'm not sure whether speech-recog was introduced a year or two later). That's over fifteen years now, and still I don't see _most_ Mac users make general use of it. They still hit Cmd-P for printing a document or select "Quit" from the menus to quit an application instead of uttering the words "Computer: Quit application" or "Computer: Print this document" etc.
Like I've said in that other thread: Concepts of operating a computer might sound 'sound' and still be defective or awkward or simply slower in actual use than what's already there.
I'm not saying we'll _never_ change the way we interact with computers, mind you! Just the other day, it hit me how quickly I've grown accustomed to use two fingers on my MacBook's trackpad to "right-click" or scroll through documents. I think the important part of that, though, is that it lets me work quickly without taking my hand too far away from the keyboard.
There certainly _are_ uses for new input technology. Most of those "incredible!" concepts have a very _specific_ target in mind, though, and they might not change how we interact with computers altogether. I'm just saying: Don't read too much into such stuff until it's actually _there_. In your hands. For, say, a hundred or a thousand bucks. Else you'll never let go of things like e-ink rollable display PDAs, "the paperless office" or fuel-cells giving your notebook 20 hours of "battery"-life with a drop of hydrogen.
Let's take things one at a time. Two-finger scrolling and right-clicking on MacBooks is here. It's great. Multitouch on the iPhone will be here in a matter of weeks (or months outside of the US). And I'm pretty sure it'll rock. But if you want to speculate about what "Vienna" will be like when it hits the streets, look at what "Longhorn" was going to be and what Vista actually delivered so far. Count the years it has taken them from a beautiful vision to a moderate update to their ageing operating system. Translate that to months or weeks and then: Think again.
