I didn't say there wouldn't be a screen. But natural conversations will be much more fluid and efficient than a keyboard and google search. Having a conversation is so much better for all sorts of applications.

Today's smartphones have to evolve this way, imo. I don't know what the most efficient hardware realization would look like but I imagine it's something that isn't in your pocket most of the time, more of a sleek wearable. It will need to be able to hear and see what you do.