You are taking the average of two groups but there is no iceberg, the self-taught people who make it are the only ones in that group...the other people do other things. It is like including the people who drop out of college in your group. As you say, self-taught is harder so people who go through that are going to know more and will end up knowing more that is useful.
People who teach at university aren't the experts in the field. The situation of university is inherently artificial created to fulfill a wide range of objectives which are largely unrelated to utility for students (and certainly not, utility for employers). For most subjects, people who teach at university are going to be very far from the experts...if they were experts, they wouldn't be teaching.
People who teach at university aren't the experts in the field. The situation of university is inherently artificial created to fulfill a wide range of objectives which are largely unrelated to utility for students (and certainly not, utility for employers). For most subjects, people who teach at university are going to be very far from the experts...if they were experts, they wouldn't be teaching.