" By analogy, both sculptors and appraisers have the power to raise the market value of a piece of stone. The sculptor raises the market value of a piece of stone by shaping it. The appraiser raises the market value of a piece of stone by judging it. Teachers need to ask ourselves, “How much of what we do is sculpting, and how much is appraising? "

― Bryan Caplan , The Case Against Education: Why the Education System Is a Waste of Time and Money