Pretty mush as soon as the episode finished on the east coast, CBR had already posted bits of an interview with Bruno Heller did with Deadline about the end of "The Last Laugh".
Bruno Heller via CBR and Deadline said:The creation of the Joker is a larger and more epic story than people realize, and this show is very much about kind of the deep, secret history," Heller told Deadline. "So, as the show rolls on, people will see how a mythology is born, how a kind of cultural mien is created that will lead us to the Joker himself."
Bruno Heller via CBR and Deadline said:"When the Joker appears, he is an inevitable part of the history of Gotham," Heller continued. "He’s not someone who created himself out of nothing. He’s part of a whole cultural history, a whole tradition. I know that sounds kind of highfalutin, but that’s what the twist is about."