If you’re unsure about whether to buy the book Nanotech Fortunes: Make Yours in the Boom, you can wait for my review, or listen to this WallStreetReporter audio interview of the author. One point made is that he expects a series of booms and busts for the next 20 to 40 years. Sounds right to me. The interview starts out a bit rocky but improves, so hang in there.
