In my experience, the aspect that delineates an expert is that experts can fix things. Gaining knowledge isn’t particularly difficult. But expertise comes from

In my experience, the aspect that delineates an expert is that experts can fix things. Gaining knowledge isn’t particularly difficult. But expertise comes from actually applying that knowledge in the real world. The real world is messy and chaotic. It’s also multidisciplinary. Acquired knowledge tends to be limited to the topic at hand. We find topics we like and learn more about them. But the rough edges where disparate disciplines meet is where expertise grows.