A touch interface, like iPad's, which he also criticizes, is like one giant bloody affordance. 99% of the touch targets are obvious. There have been videos of

A touch interface, like iPad's, which he also criticizes, is like one giant bloody affordance. 99% of the touch targets are obvious. There have been videos of babies, 5 year olds and autistic kids using an iPad just fine. As for the 1% of the rest you can just discover them in time. Not everything needs to be in your face, especially if it's a secondary function. And iPad has tons of discoverability, especially how you can't really mess it up whatever you do, just delete an app and reinstall it in the worst case and you're where you left.