Homer Simpson once proposed a toast “to alcohol, cause of and solution to all of life’s problems”. For global companies that have drunk deep of debt, his line captures a nasty irony. The pandemic poses especially big economic hazards to companies with highly leveraged balance sheets, a group that now includes much of the corporate world. Yet the only viable short-term solution is to borrow more, to survive until the crisis passes. The result: companies will hit the next crisis with even more precarious debt piles. The cycle needs breaking.

In the US, non-financial corporate debt was about $10tn at the start of the crisis. At 47 per cent of gross domestic product, it has never been greater. Under normal conditions this would not be a problem, because record-low interest rates have made debt easier to bear. Corporate bosses, by levering up, have only followed the incentives presented to them. Debt is cheap and tax deductible so using more of it boosts earnings.

But in a crisis, whatever its price, debt turns radioactive. As revenues plummet, interest payments loom large. Debt maturities become mortal threats. The chance of contagious defaults rises, and the system creaks.