chapter  0
6 Pages


This book is an expanded and edited version of a doctoral thesis entitled Integrating Marker-passing and Problem-Solving: A spreading activation approach to improved choice in planning (Hendler, 1986). In the year between the completion of the thesis and the delivery of the manuscript, m aterial was added, deleted, and rew ritten to turn the work into a more coherent whole, to bring it up to date, and to include material, particularly m aterial on connectionism, th a t hadn’t been published at the time the dissertation was released. Still and all, after all th a t rewriting it was realized th a t something was still missing.