Originally published in 1986. This work remains of compelling interest to those concerned with the natural sciences and their social problems. It puts forward original and unorthodox ideas about the philosophy of and sociology of science, starting from the conviction that modern societies face deep problems arising from unresolved dilemmas about the meaning, content and technical applications of the theories of nature they employ. The book draws on insights developed within a variety of traditions to explore these problems, especially the work of Edmund Husserl and modern critical theory.