Better still, this academic exercise in temporal studies will open the door to even more examinations in how time travel works at the movies. Just as we’ve previously discussed with Avengers: Endgame, the subject of traveling through the past, present, and future of any given timeline is going to be something we’re going to invest a lot of time into. So if you like what you see here, there’s a great big beautiful tomorrow and/or yesterday waiting for you after! For now though, let’s go back… to the past, present, and future of Hill Valley, California!
Article source: https://www.cinemablend.com/news/2551465/how-back-to-the-futures-time-travel-works