[marc0]

I see quite some discussion about UIs and whether they should be audio based or rather visually oriented etc. For a really futuristic intelligent device (call it OS, robot ...) I would drop the idea of "the UI" at all. Rather I would imagine such a system to be intelligent enough to provide a suitable way to exchange data depending on the situation and the task.

There are times when "it" listens to my words and answers verbally. At other times I just want "it" to read what I wrote on my sheet of paper and interpret it. Or I want it to follow my eye movements, or read command off my lips. And it's not just a collection of UIs, but it's a flexible UI that adapts its protocols permanently (sometimes twinkling of an eye has huge information content, sometimes not).