The classical knowledge distinctions on Gor tend to follow caste lines
The classical knowledge distinctions on Gor tend to follow caste lines, the first knowledge being regarded as appropriate for the lower castes and the second knowledge for the higher castes. That there is a third knowledge, that of Priest-Kings, is also a common belief. The distinctions, however, between knowledge tend to be somewhat imperfect and artificial. For example, the second knowledge, while required of the higher castes and not of the lower castes, is not prohibited to the lower castes. It is not a body of secret or jealously guarded truths, for example.
Kajira of Gor, p. 633