In a book published on Monday, Reset: Restoring Australia after the pandemic recession, Garnaut argues we need to aim much higher than getting back to the “normal” that existed in the seven years between the end of the China resource boom in 2012 and the arrival of the virus early last year.

For a start, that period wasn’t nearly good enough to be accepted as normal. Unemployment and underemployment remained stubbornly high – in the latter years, well above the rates in developed countries that suffered greater damage from the global financial crisis in 2008-09, he says.

“Wages stagnated. Productivity and output per person grew more slowly than in the United States, or Japan, or the developed world as a whole,” he says. (If that weakness comes as a surprise to you, it’s because our population grew much faster than in other rich countries, making it look like we were growing faster than them. We got bigger without living standards getting better.)

So that wasn’t too wonderful, but Garnaut argues if that’s what we go back to, it will be worse this time. Living standards would remain lower, and unemployment and underemployment would linger above the too-high levels of 2019.

We’d have a lot more public debt, business investment would be lower and we’d gain less from our international trade, partly because of slower world growth, partly because of problems in our relations with China.

Continuing high unemployment would devalue the skills of many workers, particularly the young. Many of our most important economic institutions – starting with the universities – have been diminished.

The new normal would be more disrupted than the old one by the accumulating effects of climate change and continuing disputes about how to respond to this.

So Garnaut proposes radical changes to existing economic policies to make the economy stronger, fairer, and to treat climate change as an opportunity to gain rather than a cause of loss.

At the centre of his plan is returning the economy to full employment by 2025. That is, get the rate of unemployment down from 6.5 per cent to 3.5 per cent or lower – the lowest it’s been since the early 1970s.

This would make the economy both richer and fairer, since it’s the jobless who’d benefit most. Returning to full employment would take us back to the old days when wages rose much faster than prices and living standards kept improving.

Returning to full employment, he says, would require a radical change to the way businesses pay company tax and the introduction of a guaranteed minimum income, paid to almost all adults at the present rate of the dole, indexed to inflation.

It would involve rolling the present income tax and social security benefits into one system. This would benefit people working in the gig economy and other low-paid and insecure jobs, and greatly reduce the effective tax rates that discourage women and some men from moving from part-time to full-time work.

Changing the basis of company tax would cost the budget a lot in the early years but then raise a lot more in the later years. The guaranteed minimum income would cost a lot but would become more affordable as more people were in jobs and paying tax.

Much of the economic growth Garnaut seeks would come from greater exports. Australia’s natural strengths in renewable energy and our role as the world’s main source of minerals requiring large amounts of energy for processing into metals creates the opportunity for large-scale investment in new export industries. We could produce large exports of zero-emissions chemical manufactures based on biomass, and also sell carbon credits to foreigners.

Of recent years, Australia has fallen into the hands of mediocrities telling us how well they – and we – are doing. Surely we can do better.

Ross Gittins is the economics editor.