The most dramatic transition in epistemological understanding usually begins in adolescence and is characterized by abandonment of the absolutist belief in certain knowledge. It is replaced by a MULTIPLIST (sometimes called relativist) conception of knowledge as opinions, freely chosen by their holders as personal possessions and accordingly not open to challenge. The source of knowledge is now clearly and appropriately located in the human mind. But confronted by the discovery that even experts draw conflicting conclusions, the multiplist resolves the dilemma by accepting all views as equally valid. Because everyone has a right to their opinion, all opinions must be equally right.