Last month, I tried out the new 4DX theater at the Regal Cinemas in Manhattan’s Union Square. Seating in the theater is assigned and it was a packed house; by the time I bought my ticket, my only choice was in a solo seat wedged between two other parties. To my left, was a couple in their 30s. To my right, was a guy who looked to be in his early 20s. When the movie started, he took out his cell phone and began taking pictures of the screen. He snapped a photo of the title card; of Superman’s first appearance; of the debut of the new Batmobile.