I think this is why the fiat system is inflationary (low level inflation is seen as healthy). Assuming that productive projects exist, you never want lack of capital to be the reason that they're not done. The free market is never going to perfectly allocate capital, therefore there should be some extra money in the system to allow for errors. The errors would cause inflation (money supply increased, but productive output did not), but this is better than being overly cautious.

Incidentally this is why austerity in debt-laden countries is kind of a terrible idea. You're taking a broken economy and removing what little slack remains in the system. And if the economy was broken due to corruption or incompetent government, you're kind of just betting on regime change at this point, which (apart from the human toll) won't be great economically either.