Steven Spielberg's "Disclosure Day" packs a hopeful message into its alien-centric story, and there's plenty to dive into about what the movie wants to say.

Despite enjoying a prolific 50-plus year career as a filmmaker who was instrumental in creating the summer blockbuster, Steven Spielberg has never been particularly big on direct sequels.

Since emerging from the New Hollywood movement of the 1970s, where the success of his Jaws forever altered the trajectory of the movie-theater business, Spielberg has left an inimitable imprint on eve...