South Korea might want to consider using AI to establish how old a person is. They currently have multiple methods of determining age. That’s about to change. NPR: South Koreans are getting a year younger, parliament rules. Before all you metformin-popping, senolytics-sucking, nutraceutical-nomming, life-extension obsessed billionaires start flocking to South Korea, we’re just talking about a numerical change, not the fountain of youth. “The country’s parliament passed a set of bills requiring the use of the international age-counting system, where age is based on birth date. South Korea currently uses three age-counting systems, but most citizens abide by the ‘Korean age,’ where a person is 1 year old as soon as they are born, and gain one year on every New Year’s Day.”