A research engineer for the Hazelett Stripcasting Corp. in Colchester, VT, RICHARD HAZELETT has pursued philosophy as a 50-year vocation. With degrees from Oberlin College, the University of Texas and Boston University, he has published on subjects as diverse as economic stability, political representation, mechanical engineering and the foundations of geometry. A professor of philosophy at the University of No. Colorado, Greeley, DEAN TURNER has published widely mainly in the fields of ethics, religion, education and philosophy of sciences. He has degrees from Centro de Estudios Universitarios, Mexico and a Ph.D. from the University of Texas.