In a recent interview with Gold Derby, the franchise’s co-creator addressed one of the saga’s longest-running questions, explaining why a fourth film is not, and never has been, part of the plan.

Bob Gale Says the Franchise Is Better Left Alone

Gale said every new “Back to the Future” project is approached with caution, pointing to the Broadway musical as an example. “We’re very careful what we do,” he said, explaining that he and Robert Zemeckis always had the power to cancel the production if it failed to live up to their expectations. “If we saw that it wasn’t going to work, we would have just buried it.” Instead, after seeing it develop, they realized, “OK, yeah, this is funny. The songs are great. We can cast this. It’s going to work.”

That careful approach is also why a fourth picture has never been on the table. “We don’t want to do Back to the Future Part IV for a whole bunch of different reasons,” Gale said before identifying what he considers the biggest obstacle: “Who wants to see a Back to the Future movie without Michael J. Fox? Nobody wants to see that.” He then acknowledged the actor’s inability to return to the role, adding, “And he can’t do it.”

Gale also questioned whether revisiting Marty McFly decades later would serve the story. “Do we even want to see Marty McFly at age 60? We don’t want to see that, either,” he said, before summing up the creative team’s philosophy in a simple conclusion: “Let’s leave well enough alone.”

Although another film is off the table, Gale did not rule out every possibility for the franchise. “Is there room somewhere to do something else to enhance the Back to the Future experience? There could be. We’re not closing the door on that.” At the same time, he made clear that prequels and spin-offs hold little appeal. “We don’t need that,” he said, pointing to franchises that have “gone back to the well too many times” and left audiences wishing “they should have stopped.”