"There's a reason central banks deal in gold"

Actually that notion is becoming quite antiquated. They deal in electrons now. Sure, they have their "reserves", but the reason for using precious metals in the first place was their limited availability. If you are going to put a value on something, make sure it is something "intrinsically" rare to begin with. Bankers don't use sand because the vault size would be too big. Precious metals are practical, but not intrinsic, other than perhaps for electro-conductive and decorative reasons. At $1,000 an ounce, I can be content with using copper or paint. With the advent of the electronic age, Banks don't move coins and bars around, they use wires.

"Credits" is the new coin of the realm. In Vegas, it is credits or chips, depending on how high you roll. When they convert to Quatloos I will be really worried.