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For thousands of years Precious Metals (PM) such as Gold (Au) and Silver (Ag) have been utilized as real money for exchange, wealth store, and metric of value. While I am NOT an advocate of one single commodity backing our money (like a gold standard), I do believe that the price trend of PMs are the most important indicators of the value of fiat money, plus the crimes of corrupt banking corporations and governments that manipulate PM prices. The "Canary in the coal mine" is Gold - AuCanary.