Warren Buffett's prophecy on silver prices has come true. What's next for the white metal?In 2023 at a Berkshire Hathaway shareholder conference, someone asked Warren Buffett how he could know when silver, an asset that pays no yield, is a worthy investment.His reply had nothing to do with technical analysis, inflation, or any complex formulas. Instead, it came down to arithmetic.Buffett estimated that the world was consuming perhaps 150 million more ounces of silver a year then it produced, a trend that ha ...