The Zero User Interface

I love the idea of decluttering because it's far too easy to clutter an interface up. But one thing that worries me, I suppose, about the zero UI is if you really do have no interface. It forces into a place where we need to get things perfect. There are no affordances anymore. If it doesn't work to connect that to your Wi-Fi or to whatever, how do you communicate to the user what to do now? How does that teamwork play out?"