ABSTRACT
Sidney Sonenblum's paper seems to be looking toward a textbook on projections. It has textbook virtues. It is very clear and orderly. It is exhaustive and painstaking in taxonomy, and patient in concern for methodology. It has textbook defects. It becomes a bit exhausting and painful to the impatient reader, in its extended taxonomy and methodology. Also as in a text, Sonenblum invents new terms and labels in need to identify and give life to some of the cells he has conceived. These are sometimes aptly descriptive—for example, "impact-multiplier," "stages-of-growth," and "production-function" models. Infrequently, the terms are less well conceived.
