In what was considered by the author to be one of his most important papers, this is the first time the Domain of Science model was described fully in publication. The model is an effort to describe all of human knowledge in a format which can be understood and applied in all fields of research, and the theory behind it is based in part on the writings of Charles Peirce. Figures in this article are: Fig 1 - "A Domain of Science Model for Generic Design, Showing the Interpretation of Links as Purposes Served" Fig 2 - "A Distributive Lattice Based on a Three-Block Partition" Fig 3 - "A Distributive Lattice Based on a Four-Block Partition" Note: There was a set of transparencies used for the 26 May 1986 presentation, but they were not printed in the proceedings volume. They were developed a little later than the January deadline for getting the manuscript to the proceedings publisher. Warfield's nicer drawing with curved blocks instead of rectangles was displayed as a transparency at the May meeting and it became the Domain of Science Model figure used thereafter, as seen in countless lectures, student handouts, workshops and also as the Cover Page illustration for Warfield's book A Science of Generic Design. Warfield has written a description of this paper, as follows: "THE DOMAIN OF SCIENCE MODEL: EVOLUTION AND DESIGN - A paper that presents the Domain of Science Model as a way of clarifying the distinctions between science and technology and the relation of science to methodology. It is argued that newer sciences need a disciplining mechanism, and that the DOS Model can furnish such a mechanism. This Model is based on the philosophy of science as expressed by C. S. Peirce, and the author has used it consistently as a disciplining agent in developing integrative sciences, and especially a science of generic design." (from Warfield's 1987 manuscript "Integrative Sciences, Interactive Management, Generic Design and Social Problem-Solving") A forerunner to this paper is Warfield's 1985 unpublished manuscript titled "Conceptual Science and the Evolution of Domains of Science."