Can actors be replaced with digital replicas?

“We’ve never been able to teach a computer to act,” George Lucas says. “It’s a talent, it’s a skill, it’s something you learn, it’s something you’re born with, and I don’t see in the foreseeable future that computers can become human enough in their artificial intelligence to have the same crazed psychology you need in order to relate to other people, so you can emotionally express ideas.”