And Android voice assistants aren't the point of this interview, anyway. It's more about the process of developing interactive, voice-based IO systems. This whole voice/response thing is an area that's going to take off any year now -- and has been in that state for several decades -- but may finally be going somewhere, spurred by intense competition between the many companies working in this field, including Ilya's.
One big question that I'd like to have answered: Is there stand-alone Free / Open Source software, or even just cheap software (I am mostly on Linux, by choice, but won't leap onto a sword to keep my Free Software purity) that makes for easy correction of the distortion introduced by camera-based imaging? If I could easily uncurl and keystone-correct pages, then a lot of input methods (even my phone) are suddenly much more attractive. My old Casio camera could do this 10 years ago, but I haven't found a free software desktop utility that lets me turn photos into nicely squared-up pages.