Christopher Nolan says the story of the invention of the atomic bomb told in his new film "Oppenheimer" is a warning to the world as we grapple with artificial intelligence (JULIEN DE ROSA)The story of the invention of the atomic bomb told in the new film "Oppenheimer" is a "warning" to the world as we grapple with artificial intelligence, insists the movie's director Christopher Nolan. Like back then, the startling advances in artificial intelligence (AI) are raising similar fears about the dangers of a technology with potentially uncontrollable consequences. "They had lived through World War I and they were trying to end World War II," he said. Oppenheimer argued in vain for international control of nuclear weapons, hoping it would lead to peace. The director said many would argue that "actually some stability in the world has been achieved through the existence of these weapons.