Remaking one scene from Goodfellas was one thing; making a 3.5-hour movie full of actors of varying ages was another. Helman had a proof of concept, but he still had to develop the technology to allow Scorsese to film his movie the way he wanted to. That development process would take two years. Finishing the whole film would take twice that long. “For four years it was building a Ferrari,” he says, “while you’re running the grand prix.”