Our problem from the point of view of psychology and from the point of view of genetic epistemology is to explain how the transition is made from a lower level of knowledge to a level that is judged to be higher.
Epistemology is the study of knowledge. By what conduit do we know what we know?
That is the difference between good teachers and great teachers: good teachers make the best of a pupil's means great teachers foresee a pupil's ends.