Man vänjer sig.

Waiting for the tube, I see a middle-aged woman on the platform, gesticulating wildly. "Another loony", I think, before I see the phone in her left hand. She is making a sign-language call. And suddenly it strikes me that there are people for whom 3G phones are not just a dick extension, but actually serve a practical purpose. Personally, I've always thought that not seeing people you talk to is a distinct advantage, but some people need the visual contact. Never thought of that...