John Maynard Keynes – “Anything we can do, we can afford.”
Money tells you how much of society’s resources you can command. Can you use that building, that land or that person?
It’s more than that, of course, but this is its most fundamental use.
But we are all familiar with the fact that often there are empty buildings, unemployed people and land which is not being used productively. We also know that often what people, land and buildings are being used to do is a bad: a net negative.
99% of Wall Street, for just one example. 85% of the US military, for a second.