This week's Question: In a BBC interview last year, renowned physicist, cosmologist, and author Stephen Hawking warned of the dangers of artificial intelligence. Hawking said AI "would take off on its own and re-design itself at an ever-increasing rate," passing the limited abilities of humans. A new study from Stanford University aims to understand the impacts that artificial intelligence will have on Earth. Leading thinkers from several institutions will begin a 100-year effort to study and anticipate how AI will influence how people work, live and play. "I'm very optimistic about the future and see great value ahead for humanity with advances in systems that can perceive, learn and reason," said Stanford alumnus and former president of the Association for the Advancement of Artificial Intelligence Eric Horvitz, "However, it is difficult to anticipate all of the opportunities and issues, so we need to create an enduring process." What do you think? Are you optimistic about artificial intelligence?