Interesting and wordy read.
I've been jotting down a few ideas on how to 'evolve' an OS. I've come to the conclusion that you should write an OS that adapts itself to the way you think. Something forgiving for 'dumb' users. Something complex for 'smart' users. It should remain ubiquitous.
I shall keep the rest of my ideas secret so I can become a patent troll. lol
