Fiat, a formal authorisation.
Money, a medium of exchange in coins or banknotes.
And fiat money is the cash in your pocket, backed by government, so the legitimate folding green.
As a couple we appear to evaporate money, somehow it just goes. I had around £25+ in cash yesterday when I went to the park with the girls, £20 top up on my oyster, a £1 piece of sugarcane, bread, milk and it was all gone.
We’ve got to get back into the habit of packed lunches for DW’s job and cut back on frivolous spending. Damn its difficult.