During an episode on KBC, Amitabh Bachchan said he gets amazed when people watch sci-fi films like 'Interstellar'. "I've seen it two-three times, but I still don't understand it," he said. Bachchan added that his grandchildren taunted him about this saying, "Even we didn't understand 'Kalki 2898 AD'." He said they didn't get the elements of Mahabharata in the film.