I think one factor is the higher value we place on the so-called hard sciences versus the soft sciences. We attach more value to areas that can be what we think of as objectively measured than to those that can't, areas where we think it costs a lot more money to do the research because you're employing medical doctors, unlike doctors like me. They are more highly valued than people who do social work, for example.
I think there is a host of factors that contribute to this historical valuation, and I think, to go back to what I said earlier about training, we haven't had the same kind of training as those who are doing peer review.