Holocaust survivor Sam Harris has told the story of how he survived the Holocaust hundreds of times.
He's talked about his experience in the Nazis' concentration camps with school groups and in videos for oral history archives. He even wrote a children's book.
But when he sat down to tell his story in Los Angeles a couple months ago, it was different.
In a Hollywood studio, surrounded by green screens, Harris answered questions for five or six hours a day. By the time it was all done, he'd answered nearly 2,000.
Sam Harris was getting made into a hologram.