I'd definitely agree that it's overdramatic, but not that it's unthinkable / un-speculatable. After all, it's not like societal collapse is without precedent i

I'd definitely agree that it's overdramatic, but not that it's unthinkable / un-speculatable. After all, it's not like societal collapse is without precedent in human history. Our latest global financial crisis arguably helped usher in a global wave of xenophobic populists opposed to any kind of evidence-based decision making - which, unfortunately, makes it yet harder to identify and address the root causes of really complex economic, environmental, and socio-political problems. (I should add that I'm still optimistic here - just that we shouldn't offhand dismiss this possibility as totally incredible, and that instead the possibility should serve as a wakeup call.)