Paul John, director of the Institute for Fiscal Studies, said the effects of further spending cuts on government departments already having their budgets slashed would be "hard to contemplate" and it was more likely that "protected" departments would be hit in the next parliament.
The effects of concentrating all those cuts on currently unprotected areas of public service spending look hard to contemplate.
A more likely scenario perhaps is that other choices will be made after the next election.
Taxes could rise, hitherto protected elements of public spending, like the NHS and pensions, could be hit, or the date at which we reach fiscal balance will be pushed further out.
More top news
Ronald DeShields made a number of calls to emergency services with false stories - including that police officers had been shot.
Spells of sunshine and showers are in store for the UK across the bank holiday weekend.
A British man is missing after a fatal speedboat accident in Thailand. Jason Parnell was celebrating his first wedding anniversary.