At least, deficits don’t matter when unemployment is teetering on the brink of 10%, and when government debt is actually cheaper than cash.
The chart is from Karl Smith, who writes:
Suppose the government had two choices. It could either pay for infrastructure improvements as it went along out of tax revenue or it could borrow money build the infrastructure now and then repay the money with tax revenues.
Ordinarily the question would be, does the advantage of building quickly outweigh the cost of the interest.
However, right now the interest cost is negative. The government saves money by borrowing now rather than waiting and paying cash. Let me say again because I have noticed that this goes against so much intuition that its hard for many people to wrap around when I first say it.
The government will wind up paying more if it decides to pay cash for a project than it will if it decides to borrow. This is irrespective of the return on the project itself or the advantages of avoiding delays or anything like that. It is simply that the cost of borrowing is negative.
As Alex Knapp notes the deficit really is a long-term problem. It just isn’t a problem right now and focusing on it is a cynical political ploy that is helping nobody but the cynical politicians exploiting it. The markets are spooked, the credit rating agencies are grumbling, and people remain very much unemployed.