In what specific areas do you think LWers are making serious mistakes by ignoring or not accepting strong enough priors from experts?
As I said, the ideal is to use expert opinion as prior unless you have a lot of good info, or you think something is uniquely dysfunctional about an area (its rationalist folklore that a lot of areas are dysfunctional -- "the world is mad" -- but I think people are being silly about this). Experts really do know a lot.
DeepMind's go AI, called AlphaGo, has beaten the European champion with a score of 5-0. A match against top ranked human, Lee Se-dol, is scheduled for March.