Intelligence springs from experience--in many cases ancient experience inherited; in others, by direct contact with life. It is possible that inherited ancient experience can be wiped out, insuring thereby a return of barbarism. Current, immediate life experience might possibly by degrees replace the loss of ancient inherited experience--maybe. BUt ir could also prove a slow and maybe never wholly successful process. In the western world, for instance, the high civilization of Egypt, which was maintained for nearly 4000years, was almost entirely lost to succeeding generations by being confined to a small class of the more intelligent of the population--the purpose of which was to prevent its "wrong" or dangerous use by the ignorant or evilly disposed. Again it is possible that greater civilizations than any so far recorded by man have been and for other or related reasons, have gone.