[The programmer type is] often egocentric, slightly neurotic, and he borders upon a mild schizophrenia. The incidence of beards, sandals, and other symptoms of rugged individualism or nonconformity are notably greater among this demographic group. Stories about programmers and their attitudes and particularities are legion, and do not bear repeating here.
Richard Brandon, “The Problem in Perspective.” In Proceedings of the 1968 23rd ACM National Conference, 332-334. New York: ACM Press, 1968.