The sanguine view is that as long as those selling expertise compete vigorously for the attention of discriminating buyers (the mass media), market mechanisms will assure quality control. Pundits who make it into newspaper opinion pages or onto television and radio must have good track records; otherwise, they would have been weeded out.
乐观的看法是只要那些兜售专长的人为赢得有识之士（即大众传媒）的注意而拼命竞争，那么市场机制就一定能够控制质量。在报纸、电视和收音机上发表评论的专家必须有良好的历史记录，否则的话就会被无情地淘汰。