And when she compared the advice that these people were giving to others who were interested in learning how to play the guitar, the advice was much more helpful when it came to the second group of people rather than the group of people who played the guitar as you would usually do.VEDANTAM: As I'm hearing you tell me about the guitar study, it reminds me of something else you have in the book, this insight that in many fields, the people who are the innovators are often not the people who've been in those fields for extended periods of time, that it's often the newcomers to a field who have just about enough information to have mastered the rules but have not spent so much time in the culture that they've become hidebound.These are the people who are actually able to take the culture and…