Gold itself is fiat currency btw.
Gold has value because people think it has value. Its intrinsic value lies in its superior electrical conductivity and it is pretty. For the most part, it is ornamental. Gold goes up in value in inflationary periods, but people then trade their gold back for fiat currency, so the currency has as much value as gold. A dozen eggs is real, non-fiat currency. If you are starving, a dozen eggs is worth a mountain of gold.
'Frrrozen Haute Chocolate' - $25,000
I can’t eat FRNs either. My gold will still be worth something to humans in a hundred years (because this durable metal that is only created by supernovas will still exist and an ounce of it will still buy a good men’s suit).
The Federal Reserve will not likely exist at all. The building will be used as a warehouse by our gold-owning Chinese overlords.