Renowned black-swan investor Mark Spitznagel has issued a stark warning about the potential collapse of what he calls the 'greatest bubble in human history.' Spitznagel predicts that stocks could soon lose over half their value in a steep sell-off and foresees a recession possibly by the end of the year due to the U.S. government's $34 trillion debt. His hedge fund, Universa Investments, known for profiting from past market crises, specializes in tail-risk hedging to prevent losses from unforeseeable catastrophes. Spitznagel compares the current market situation to a 'mega-tinderbox-time bomb,' emphasizing the extreme nature of the impending crisis, drawing parallels to the dot-com bubble but foreseeing a more severe impact this time. Despite warnings from experts like Spitznagel, some view the looming market crash as a potential buying opportunity.