The rest of the media is catching on to the fact that there is a paradigm shift underway in economics.

This won’t be a surprise to you if you are a regular reader of Independent Australia. I’ve written about two dozen articles on the main challenger to the old paradigm, which is modern monetary theory (MMT). Others have also written on this topic for IA. If you’ve been relying for news and current affairs on the usual suspects, however, the current controversy might have crept up on you.

For the most part, the rest of the media has been asleep on this one, even if they are latterly waking up.

There are more and more mentions of MMT in the mainstream media, and an increasing number of whole articles which are partly, if not entirely, supportive of this new frame for thinking about the economy and the role of the federal government within the economy.

Modern Monetary Theory proposes that the constraint on government spending shouldn’t be debt but inflation: How much new money can you pump into the economy before prices rise? https://t.co/iHxngaUAvJ — The New Yorker (@NewYorker) August 20, 2019

Why the sudden interest? It is becoming clear to all but the most blinkered that was for many years the near-consensus view on the best way of managing the economy is broken. It certainly doesn’t work any longer and perhaps it could only ever work for a while because it depended on things which are unsustainable. What is unsustainable, naturally, tends not to be sustained.

The old consensus was that the economy should be managed by a central bank, independently of politics, controlling interest rates to keep inflation on target and stop the economy hitting the rocks. The important thing for the government to do was to balance its budget, at least on average over time.

To do otherwise was to risk either sky-high interest rates, sky-high inflation, or both. All you needed to do was to add the right-wing propaganda about low taxes being important for incentives and productivity growth. Then you had constructed an argument for government spending cuts, privatisation of everything you could possibly privatise, all the "grey corruption" described so well in books like Banking Bad and Game of Mates and all the trickle-down economics nonsense that goes with it.

Privileged to be in #SMH Lunch ‘banking Bad’ Adele Ferguson, Wacka Williams, Jeff Morris- what a story of courage! pic.twitter.com/LzsHzY8WUp — Jackie Crispin Brown (@JackieJcb) August 23, 2019

In Australia it wasn’t only the Coalition that bought enthusiastically into this narrative. It was the Labor Party too, which abandoned full employment, privatised with gusto, deregulated the banks and set up the tax-advantaged private super system so that its rorts were inevitable.

And now, finally, we can see all this disintegrating. The result is almost a world-record level of household debt in Australia, a still-fragile property market, an unacceptable level of inequality, politicians who feel they can’t afford to raise Newstart to a civilised minimum and interest rates on their way towards zero.

And for what reason? Zero interest rates won’t do much to help. We have so much household debt, we surely don’t want to take on more and we certainly shouldn’t be piling more debt onto households. Businesses are not so heavily into debt, but why should they borrow to invest when there are not enough customers with money to justify their investments?

If you have a mortgage, an interest rate cut might help you, but it will hurt someone with term deposits, and if you spend more, they may spend less. And everyone knows interest rate cuts are a panic measure that not even the Reserve Bank (RBA) believes in. The RBA itself has been talking about euro-zone style quantitative easing, even though all serious commentators know that doesn’t work either.

Modern Monetary Theory: It's an unconventional economic theory made popular by progressive politicians Alexandria Ocasio-Cortez and Bernie Sanders. But what does this observation about currency mean for the deficit, and how is it affecting U.S. politics? https://t.co/B5dnqPiytN pic.twitter.com/rQYtqv7fEA — CNBC (@CNBC) August 21, 2019

What does work is fiscal policy as modern monetary theorists have been saying for years. If you want to hold the economy at or close to full employment, without private sector debt pushing the financial system towards a fragile state; if you want people to be able to spend out of their wages, rather than on the credit card; if you want decent public services and efficient, green public infrastructure, you have to use fiscal policy.

And in an environment where the private sector needs to add to its saving, and when the rest of the world is not going to provide enough support for sustainable prosperity in Australia through its demand for our exports, the government must net spend enough.

Most governments, most of the time, have run deficits in the past. In the absence of a persistent surplus on the current account of the balance of payments, economic growth without government deficit is simply unsustainable. It drives the private sector into debt. A government surplus is a private deficit and it weakens the financial system and the economy. A government deficit is a private surplus, and it supports the economy and strong private balance sheets.

Deficits don’t drive interest rates up if you are a monetary sovereign. Monetary sovereigns issue their own currencies and set their own interest rates. Australia’s cash rate is set by the RBA. Interest rates on government debt depend on what investors expect the RBA to do with the cash rate over time. The RBA could directly set those rates too, if it wished, as the Japanese central bank has done with ten-year interest rates on government debt since 2016. They have been set at zero. The official short-term rate has been negative.

Bank of Japan presentation of “The Reversal Interest Rate” with @YannKoby See conference program https://t.co/o5l9ldxUxF. Slides: https://t.co/yDdWiLRW4E — Markus Brunnermeier (@MarkusEconomist) May 29, 2019

And fiscal deficits are only inflationary if they contribute towards spending which pushes the economy towards its productive capacity. The question is how to ensure that we deliver a form of full employment without overheating the economy. One idea that is gaining ground now is to introduce a federal job guarantee.

The important thing to note though is that the old system is broken. Though we may be 18 months away from everyone being aware of this. People will also become aware that the government budget and the appropriate use of fiscal deficits will take over as the dominant mechanism for managing spending, employment and sustainable economic development.

For my part, I am doing my best to help the transition on its way. This includes, with the help of the University of Adelaide, inviting Bernie Sanders’ senior economic adviser, and former chief economist for the Democrats on the US Senate Budget Committee, Professor Stephanie Kelton to Australia next January, so that we can talk about modern monetary theory and a Green New Deal for Australia.

The ALP, modern monetary theory and an Australian Green New Deal https://t.co/SdXWRJZFI5 @IndependentAus @stevenhailaus — Michelle Pini (@vmp9) June 6, 2019

The Sustainable Prosperity Conference is held at the University of Adelaide from 10-12 January 2020.

You can follow Dr Steven Hail on Twitter @StevenHailAus, as well as on Facebook at Green Modern Monetary Theory and Practice. His new book, 'Economics for Sustainable Prosperity', is due to be released by Palgrave Macmillan in July.