Sometimes the line goes up and crashes. Sometimes the line goes up and keeps going up. Eventually, it has to hit some kind of limit on economic.

Huge swings are bad. Going up sharply in a short time period often comes with a devastating crash. Capitalism could try to save itself by aiming for small but consistent returns every year. It’d still eventually hit limits of growth, but it wouldn’t necessarily Wild E Coyote itself into a wall, either. It’s not capable of doing that, though, because the sugar rush of high returns is too good to pass up in the short term. The liberal economists calling for that sort of thing are constantly drowned out, which is why liberal economics ultimately won’t save us.