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Excerpt from A Comparative Analysis of Design Rationale Representations A few representations have been used for capturing design rationale. It is important to know in what ways they are adequate or limited so that we know how to improve them. In this paper, we develop a framework for evaluating design rationale representations based on a set of generic design tasks. We build the framework by progressively differentiating the elements of design rationale that, when made explicit, support an increasing number of the design tasks. With this framework, we evaluate the expressiveness of the existing representations. We also present a language, drl, that we believe is the most expressive of the existing representations without being too complex for human users. We also discuss the limitations of drl as open problems for further research. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.