I hope I’m wrong, but I doubt if Scott Morrison’s $17.6 billion stimulus package is big enough to stop the temporary shock of the coronavirus outbreak becoming a longer-lasting blow to the economy.

We live in an economy that each year produces goods and services worth $2 trillion a year. To have a significant impact on the economy we needed measures worth at least 1 per cent of that – about $20 billion in their first year.

To be fair, the package is much bigger than earlier envisaged, but “a touch less than 1 per cent” isn’t as comforting as well over 1 per cent. It’s clear the measures in the package have been carefully designed – Treasury’s fingerprints are everywhere – and Morrison keeps saying it’s “scalable”: it can be added to. Maybe he’s already intending to top it up.

Scott Morrison's cash splash of $750 a throw is limited to welfare recipients, it should have gone to all low and middle income-earners. Credit:Alex Ellinghausen

Treasury’s famous advice to former prime minister Kevin Rudd during the global financial crisis in 2008 was “go hard, go early, go households”. That advice is as good today as it was then. Morrison and his Coalition colleagues have spent the past decade finding fault with Rudd’s stimulus but, as the prominent economist Chris Richardson has said, “it worked”.