I read this piece with a great deal of interest and got the impression that Greg Chappell clearly knows what he is talking about. Then I read something that I happen to know something about-- about how the brain recognizes patterns. I don't know Charles Krebbs but would like to query Chappell's view that he is one of the few people in the world who knows about this. There is an enormous literature in cognitive psychology about this exact subject and I am not sure that cognitive scientists will name Krebbs as one person who has special knowledge here. I then move on to his discussion of Gladwell's tipping point. Again, I was struck by the superficiality of Chappell's understanding here. Given that Chappell is clearly out of depth talking about the only two things I know in his extensive conversation here, I have to doubt his expertise on other topics he brings up in his conversation. I think we need to recognize that being articulate is not a good indicator of expertise.
