'The Guild is a giant machine, built from humans. Each one is a cog. But it is difficult to make a machine in which every cog is different. That's why we need precise measurements of people. Which would be expensive, but we managed to commandeer the help of Academy's and Church's educational systems. Endless examinations and evaluations they subject their students to is their contribution towards our cause, an important element of our alliance. The actual knowledge they teach (or what passes for it) is irrelevant to us.'