Aaron makes many good points. This is one of them:

Andrea Lafferty, of the Traditional Values Coalition, says, “There’s an arrogance in the scientific community that they know better than the average American.” Perhaps that’s because scientists are are educated and knowledgeable enough that “knowing more than the average American” is actually their job, just like “being better at fixing cars than the average American” is how an auto mechanic gets paid to fix cars by average people who respect that expertise.