According to star Jon Hamm, his new sci-fi film “Marjorie Prime” explores “what it is that makes us human.”

“It was an interesting challenge ’cause not only do I play the hologram in the film, but I also play the person upon who the hologram is based,” Hamm said. “It was exciting to get a chance to think about what the difference between those two characters might be.”

Writer-director Michael Almereyda and stars Tim Robbins, Lois Smith, and Geena Davis were also on hand for the Variety Studio, presented by Orville Redenbacher’s, at the Sundance Film Festival, to promote the movie — based on Jordan Harrison’s play of the same name.