Only read half so far, but so far it's interesting.<p>It's NOT just a return to Malthus and Ehrlich, although the latter is cited several times as a sort of parallel. Even so, I think they miss the point of why Ehrlich lost his wager with Simon. While it's true that prosperity is helped by constant increases in manpower, it's not the biggest factor.<p>Our climbing prosperity is primarily due to improving know-how. And barring really extreme circumstances, we're not going to forget the technology that has allowed us to feed more with less work, and other feats.<p>That technology will still exist into the future, and because IP isn't rivalrous (claims of Disney and RIAA notwithstanding), it'll be available the whole world.