It could all just end you know.

It seems eternal because it’s what we know…which is to say, it’s an illusion that it’s eternal, or even all that stable.

Rachel Nuwer wrote a long read on the subject for the BBC.

Safa Motesharrei, a systems scientist at the University of Maryland, uses computer models to gain a deeper understanding of the mechanisms that can lead to local or global sustainability or collapse. According to findings that Motesharrei and his colleagues published in 2014, there are two factors that matter: ecological strain and economic stratification. The ecological category is the more widely understood and recognised path to potential doom, especially in terms of depletion of natural resources such as groundwater, soil, fisheries and forests – all of which could be worsened by climate change.

That economic stratification may lead to collapse on its own, on the other hand, came as more of a surprise to Motesharrei and his colleagues. Under this scenario, elites push society toward instability and eventual collapse by hoarding huge quantities of wealth and resources, and leaving little or none for commoners who vastly outnumber them yet support them with labour. Eventually, the working population crashes because the portion of wealth allocated to them is not enough, followed by collapse of the elites due to the absence of labour. The inequalities we see today both within and between countries already point to such disparities. For example, the top 10% of global income earners are responsible for almost as much total greenhouse gas emissions as the bottom 90% combined. Similarly, about half the world’s population lives on less than $3 per day.

Not to mention a lot of stuff we’re already familiar with, like the way poor people keep getting priced out of cities. I’m always wondering why that doesn’t lead to breakdown in the form of labor shortages.

“If we make rational choices to reduce factors such as inequality, explosive population growth, the rate at which we deplete natural resources and the rate of pollution – all perfectly doable things – then we can avoid collapse and stabilise onto a sustainable trajectory,” Motesharrei said. “But we cannot wait forever to make those decisions.”

But instead of making rational choices we do things like electing Donald Trump.

Unfortunately, some experts believe such tough decisions exceed our political and psychological capabilities. “The world will not rise to the occasion of solving the climate problem during this century, simply because it is more expensive in the short term to solve the problem than it is to just keep acting as usual,” says Jorgen Randers, a professor emeritus of climate strategy at the BI Norwegian Business School, and author of 2052: A Global Forecast for the Next Forty Years. “The climate problem will get worse and worse and worse because we won’t be able to live up to what we’ve promised to do in the Paris Agreement and elsewhere.”

Because we’ll vote for people like Trump, who will make sure we don’t.

Complexity is expensive; it eats up a lot of resources. One explanation for the collapse of ancient Rome is that it got so complex it couldn’t keep up with the expense.

So far, modern Western societies have largely been able to postpone similar precipitators of collapse through fossil fuels and industrial technologies – think hydraulic fracturing coming along in 2008, just in time to offset soaring oil prices. Tainter suspects this will not always be the case, however. “Imagine the costs if we have to build a seawall around Manhattan, just to protect against storms and rising tides,” he says. Eventually, investment in complexity as a problem-solving strategy reaches a point of diminishing returns, leading to fiscal weakness and vulnerability to collapse. That is, he says “unless we find a way to pay for the complexity, as our ancestors did when they increasingly ran societies on fossil fuels.”

There will be refugees, and resistance to refugees – like now only more so.

Meanwhile, a widening gap between rich and poor within those already vulnerable Western nations will push society toward further instability from the inside. “By 2050, the US and UK will have evolved into two-class societies where a small elite lives a good life and there is declining well-being for the majority,” Randers says. “What will collapse is equity.”

By 2050? How about now? How about 1985 or so?

I don’t have anything cheerful to say about all this.