I am not going to concern myself with trying to predict the entire future of the human economy, or even of the American economy for so long as it lasts. I will, however, point out hat we are in the midst of one industrial revolution at the same time we are beginning two more, and have at least one more on the visible horizon. The ongoing revolution is the microchip revolution. As regards discrete, big, powerful desktop-like processors, I expect we may actually be closer to the end of it than to the beginning. But that is sheer speculation. The two nascent revolutions are the telecommunications/bandwidth revolution and the biotech revolution. (The biotech revolution might also be broken down into revolutions for products and revolutions for direct human health, but let's not confuse the issues any more than we have to.) The horizon rervolution is, of course, molecular nanotechnology. What's more, these revolutions play off each other to a major degree– understanding of protein folding is facilitated by large computer simulations, and devices incorporating this understanding will be constructed with molecular nanotechnology for the purpose of improving human health. All of these contribute to economic productivity gains. In short, from a technologist's point of view, I don't see any reason to think ill of that side of the equation for another 40 to 50 years.