The Shining

At the end, when they show Jack in that photo from the 1920s, way before he was even born...I think it’s meant to show that Jack has always been the caretaker. He’s the eternal caretaker of the Overlook Hotel. It actually makes sense, because when the family first arrived, Jack said he felt like he’d been there before. And when he met Grady, Grady told him, 'You’ve always been the caretaker.' It all ties together.