Since people are the problem, so full of dangerous unlimited ideology and self serving BS, what a stupendously big mistake it is to have so many of them at the same time. All demanding sustanance, meaning, and social justification. Failing to understand the exponential growth function, and our place in nature, and social tolerance of human population density, kills our sanity well before we get to fixing our trashing complex non linear systems, and killing biosphere physiology.