This book began life as a review article. That article spawned a
symposium which was, in turn, greatly expanded to form the present
volume. As the project moved through these developmental stages
(hopefully, towards attainment of its full maturity), a number of people
have provided invaluable assistance to us, and we would like to take
this opportunity to thank them. Gordon Orians must certainly take a high
place in that list. He has been both a friend and mentor to W.E.K., and
many of the topics explored in this book have emerged from the resultant
dialogue. His thought processes, ideas and perhaps even some of his
turns of phrase emerge throughout much ofthe book. Gordon also played a
pivotal role in inviting in motion, and so he has served as a catalyst
the article that set this project to the book as well as one of its
reagents. While he has not served as an editor of this book, he is one
of its authors in more than just the literal sense.