MOVIE PREMIERE: Robert Redford, Rooney Mara, Jason Segel, and Jesse Plemons star in this challenging new film, which posits, and dramatizes, a thought-provoking hypothetical: What if proof were discovered of an actual afterlife? How would people respond? And, given that information, would they wait for their natural deaths to see for themselves? If you’re dying to know the answers to those questions, this is for you…