The realism of AI-generated video is one of the more remarkable, and potentially scary, developments we've seen so far with the technology. Oren Etzioni studies artificial intelligence and is the founder of truemedia.org, an organization that fights against AI-based disinformation. Etzioni joined William Brangham to discuss the future of AI. PBS News is supported by - https://www.pbs.org/newshour/about/funders