It turns out that the logic of no food = no being a baby machine does NOT compute in our limited brains. What instead occurs is the kicking in of the INSTINCT to pump out babies whenever we perceive our environment to be unsafe.Therefore, starving people = more baby machine behavior. Sadly this has been proven fact.Therefore, creating a safe environment leads to the end of baby machine behavior.As for actual NATURE versus human nature: Abuse cropland and no food will result. Monoculture crops are unsustainable and again no food will result. Dump chemicals to maximize crops and no food will result. (Think bees). Too many of one species, and predatory vectors will arise to take advantage of the situation and kill them off down to a level of sustainable equilibrium.But of course we humans are masters at short circuiting nature, often to our detriment; Certainly in the case of our drastic over-population and consequent destruction of our miracle planet.Nature, it turns out, is complex far beyond human comprehension. We mess over one part of nature for our benefit and destroy an aspect of our ability to survive at the same time. The more attention we pay to how natural systems work, the more likely we are to not screw things up. But that takes in depth and long term thinking. That means overturning some basic tenants of Capitalism.