The moment the young master had had enough, the pedagogue went back to his place. In more recent times a pedagogue role has been played by, for instance, ballet and fencing masters at aristocratic courts, nannies and private tutors in rich families, and au pair girls and 'assistantes'. The pedagogue has knowledge but no authority, must always be available but can be ignored or sacked if he fails to please. He leads a wretched life, and modern mankind is rightly guilty about the form of exploitation he represents. In any case, he can only serve one learner or a small group at any one time, so it has become too expensive to use human pedagogues on a large scale.
Computers make bad magisters but good pedagogues.
We need have no bad conscience about exploiting them. The slave, after all, is passive. He takes no initiatives, asks no questions until commanded to, but obeys mindlessly whatever instructions are given to him. In order to use computers as pedagogues learners will have to learn to take initiatives, to dig out knowledge which will not be offered freely. Teachers, perhaps, will have to learn to stand back and not interfere with the exploration process.