Panel discussion from the 2011 World Science Festival on digital physics.
Edward Fredkin: Fredkin has been broadly interested in computation: hardware and software. He is the inventor of many things including the Trie data structure, the Fredkin Gate and the Billiard Ball Model. Fredkin and his students did pioneering work on cellular automata and reversible computing. He has also been involved in computer vision, chess and other areas of AI research.
Fotini Markopoulou-Kalamara: A founding member and faculty at the Perimeter Institute for Theoretical Physics in Canada, a research institute devoted to foundational issues in theoretical physics, Fotini Markopoulou-Kalamara is a leading researcher in the problem of quantum gravity.
Jürgen Schmidhuber: Jürgen Schmidhuber has published over 200 peer-reviewed scientific papers on artificial intelligence, machine learning, mathematically optimal universal AI, artificial curiosity and creativity, adaptive robotics, algorithmic information and complexity theory, computable universes and digital physics, the formal theory of beauty, and fine arts.
Seth Lloyd: Working with a variety of groups to construct and operate quantum computers and quantum communication systems, Seth Lloyd is the first person to develop a realizable model for quantum computation. His research focuses on the role of information in complex systems and the quantum mechanics of living systems (known as `quantum life'), economics, and cosmology.
John Hockenberry -moderator: John Hockenberry is an award-winning journalist with twenty-five years experience in radio, broadcast television and print. He is co-host of WNYC and PRI's The Takeaway, host on The DNA Files, and a contributor to The Infinite Mind.