The world’s pension promise is unraveling. In the 1950s, sixteen workers supported each retiree; today, that number has shrunk to just 2.7. This dramatic shift is straining pay-as-you-go pension systems to the breaking point. By 2050, one in six people will be over 65, yet politicians are hesitant to implement tough reforms that would require individuals to work longer, contribute more, or accept smaller benefits. Could Denmark’s approach, which ties the retirement age to life expectancy, or Sweden’s automatic adjustment model, offer a way out? Or will a staggering $400 trillion global retirement gap shake the foundations of economies everywhere?