yet the book doesn't feed or cloth anyone. This is generally done by the sun (and stored energy from it in the form of many fossil fuels). Also, for a finite po

yet the book doesn't feed or cloth anyone. This is generally done by the sun (and stored energy from it in the form of many fossil fuels). Also, for a finite population, all the other books can not be consumed anymore. So yes, it is a zero-sum game.