What is it with billionaires and gold? When billionaire Sam Zell warned at the end of December that the dollar’s status as the world’s principal reserve currency was in jeopardy, it nudged something in the back of the mind about the number of billionaires over the past year who issued similar warnings. The wealthiest among us, it seems, are also the most vocal and proactive about the dangers they see dead ahead. Meanwhile, the unschooled masses utilize online investment portals from Robinhood to Schwab to dash headlong into the most wildly overvalued stock market in history. In a recent MarketWatch interview, Charlie Munger, another billionaire and Warren Buffett’s business partner called the current stock market frenzy “the most dramatic thing that’s almost ever happened in the entire world history of finance.” He believes that “we’re in very uncharted waters. Nobody has gotten by with the kind of money printing now for a very extended period without some kind of trouble. We’re very near the edge of playing with fire.” Ray Dalio, who heads up the world’s largest hedge fund (Bridgewater Securities) and another billionaire, believes that the world is likely to change in “shocking ways” over the next five years, including a loss of faith in the U.S. dollar: “Within the next five years you could see a situation in which foreigners who have been lending money to the United States won’t want to.”