@lordbowlich @22 Oh, yes we could. We'd have to live much more densely and efficiently. If we lived like Singaporeans, we could simultaneously be rich and thrice as numerous. We haven't demonstrated an inability to do so, we simply haven't done so, because we did not collectively choose to make a light ecological footprint a priority. I'm not advocating, qua Yglesias, going for that billion. It'd be bad while we're still going for a F150 in every five car garage. But we are more than capable.