What if, instead, it was the lead author of the next chapter of human longevity? some types of turtle) already live 200 years, so humans are manifestly not at some theoretical upper limit,” he continued. “The burden of proof is on the AI scientists to demonstrate they can modulate the human body and how it works. Today, humans live longer lives than at any point in our 300,000-year history, but expanding beyond that threshold will require much more than predictions and unsubstantiated promises. “At the moment, AI is just a buzz term with no evidence that it will yield radical increases in human longevity,” Olshansky says.