Letters to the Editor
Abstract
Letters to the Editor:
—To the Editor: Re: Schonberger, Richard J., 1981, “Why Projects Are ‘Always’ Late: A Rationale Based on Manual Simulation of a PERT/CPM Network,” Interfaces Vol. 11, No. 5, pp. 66–70, by W. H. Bleuel, Barber-Colman Company, Rockford, Illinois.
—To the Editor: Re: “De Novo Programming”: The Emperor's New Clothes? by Donald Erlenkotter, Graduate School of Management, University of California, Los Angeles.
—Editorial note about other letters with similar comments.
—The Author Replies by Milan Zeleny, Graduate School of Business, Fordham University at Lincoln Center, New York.

