What is the "deep learning" that was used in the impressive program that defeated a champion Go player? Wired (http://www.wired.com/) article that puts the accomplishment in perspective and provides a high-level description of deep learning (in 6 brief steps).  Placing it in perspective: "Thus, deep learning (and machine learning in general) has proven to be a powerful class of methods in AI, but current machine learning methods require substantial human involvement to formulate a machine learning problem and substantial skill and time to iteratively reformulate the problem until it is solvable by a machine."  (Unfortunately the author dismisses the field of Genetic Algorithms as a failure, and I take exception to that -- GA can do amazing things, but just because it has limitations doesn't make it a failure.)