This all assumes conditions as usual. Which I think is a painfully mistaken notion. In an era of depleting fossil fuels, inferior ore quality of iron, copper an

This all assumes conditions as usual. Which I think is a painfully mistaken notion. In an era of depleting fossil fuels, inferior ore quality of iron, copper and all the rare earth metals required to make modern electronics, water shortages and overpopulation, I doubt people will be worried about email overload in even 20 years. What's missing from this list are the real big issues of our time, such as quitting our reliance on fossil fuels, building a sustainable economy for the planet's resources, and creating a currency not solely based on debt expansion. In an economy with less energy surplus our problems will be more primitive than worrying about heart disease or faster computation or better search. Solving the shrinking energy surplus..., now that would be a really scary big startup of planet-wide implication.