> The country got along fine with half the current population, and half of that, and half of that. There's no reason to think there's anything magical about the

> The country got along fine with half the current population, and half of that, and half of that. There's no reason to think there's anything magical about the current population value. It is less about sheer number of people and more about the ratio between those that can work (young) and those that cannot (old).