32: the number of the problem of life on earth

An interesting article by Jared Diamond in this month's Edge 233: he writes about the number 32 which happens among other things to define the rough consumption rate of the 1 billion of us in the rich chunk of the world compared to the rest. He goes on to spell out the consequences fairly starkly.
"If India as well as China were to catch up [with first world rates], world consumption rates would triple. If the whole developing world were suddenly to catch up, world rates would increase elevenfold. It would be as if the world population ballooned to 72 billion people (retaining present consumption rates). Some optimists claim that we could support a world with nine billion people. But I haven't met anyone crazy enough to claim that we could support 72 billion. Yet we often promise developing countries that if they will only adopt good policies — for example, institute honest government and a free-market economy — they, too, will be able to enjoy a first-world lifestyle. This promise is impossible, a cruel hoax: we are having difficulty supporting a first-world lifestyle even now for only one billion people."