As we confront the future of our professional endeavors, we tend to rely with con'dence on longstanding and widely honored assumptions about the world and ourselves. We believe we have accumulated sturdy structures of knowledge, eff- tive practices, and sound values. Yet, we rely on these resources with scant c- sciousness that in the long run our assumptions, practices, and values may not only be inimical to the viability of our profession, but as...