Robert Kiyosaki, the best-selling author of the "Rich Dad, Poor Dad" series of personal financial books, has predicted that bitcoin will fall to $24,000 before the "greatest meltdown in global history." On social media, he said that financial markets are currently in a "bubble" that is "growing bigger." He is now aggressively buying gold and silver and is waiting for the price to drop, as "crashes [are] the perfect moment to make rich," according to him.