One of the things I have tried to do with this book and with all of them really is avoid that simple, easy, reductionist view of motivation and to show we do things for a complex net of reasons, a real braid of reasons.
For years, we've grown dependant on American consumers as the world's spenders of last resort. They've kept Europe out of recession, allowed China to industrialise, and prevented global deflation. But at the same time, they've not been looking after their own futures.
The only thing that scares me in the tech area is that it moves so fast that you have to be ready to invest in 20 things. Because if you just invest in one, next week, somebody has a better mousetrap, and you get taken to the cleaners.