Going to a conference where everyone is an expert in the same topic is both useful and odd. Useful because I always learn something – a new tool, an interesting approach, and a different spin on the known. It's odd because it's a small world of people speaking a special language which seems to boundaryline their world in a way that excludes the value of diversity. Suppose a truck driver came to the conference – what would he/she get from it? What would organization design experts get from the truck driver? Does professional expertise lose opportunities by being exclusive?