First, thanks for such a rigorously informative article.

As I see it, the central problem relating to the stability of the existing economy (including the price level) is the interdependence of all the variables in it. That is the definition of a chaotic system.

One solution would be to make the supply of money, as currency, an exogenous variable: "Paradigm Shift" (here in Medium). It could be accomplished in any nation on the planet, with a single legislative Act: "Easy as 1-2-3-4" (also in Medium).

That currency would be created as needed. To prevent the accumulation of too much money in the economy the monetary loop would have to be closed--which would make the supply of money self-regulating. (That would entail limiting the hoarding of money — which could be accomplished in such a way as to limit it in effect to large, established corporations). If that money were used to establish a minimum guaranteed income for (adult) citizens (by paying it to retirees and adults unable to work and guaranteeing a job for all other adults at a sufficient rate of pay) and to fund government (all government, from central to local, at the current per capita rate of total government spending )—in the place of taxes/public debt — the economy as a whole would become self-regulating. Sustainability would be all but assured because total output would be governed, passively but effectively, by demographics — with no unemployment or poverty at any level of total output: at no cost to anyone, without having to redistribute anything, without imposing any limit on income/wealth, and without requiring people to change their behavior in any way.

When I first came up with this idea I had no assurance it would make any economic sense at all, much less produce those results. I welcome substantive critique.