Well said. However, true precious metals, especially gold, will never be worthless, but should not be the only preparation for a currency failure. except for their well documented use in industrial abrasives, etc, Diamonds are a "greater fool" invention by DeBeers.In a power outage situation, what you don't physically possess is no longer yours. Think everything from stocks, bitcoin, checking account, electronically stored documents, etc. In a real bad situation, precious metals, diamonds, etc will be worthless. Things that will have value will be food, water, medicine/medical gear, fuel for a while, manual tools, weapons, and people you can count on.