Most long-term predictions tend to be made by people living in pockets where the future has already arrived, but it seems appropriate to recall Gibson's prediction about uneven future distribution. Trying to extrapolate based on local maxima will always produce a trendline that outpaces reality. To his credit, I don't see any flying cars here; the author bases many of his predictions on innovations and trends that are already to some extent or other in progress. But in order to bring a change from possible to widespread, it has to be commercialized first, and I struggle to see a profit motive for some of these things, even in the next 30 years - i.e. energy consumption monitoring by Google when electricity is cheap thanks to nuclear fission, etc.