A succession of theories has been generated in opposition to extant theories has been generated in progression, since it was an old theory framed in a new package. This crisis generated the push for integrated theories that downplay the significance of fundamentally opposed views of the world. Integrated theories restrain and distort progress unless the constituent theories already share assumptions and are virtually the same theory. As long as theorists are debating among themselves, the terms of the debate are likely to be defined by traditional theoretical concepts, and opportunities for empirical input will be limited. Also, as long as existing theories are the primary concern, the favored mode of research will tend to be the large-scale survey, whose systematic data allow direct test of theory-derived hypotheses. This is not conducive to the discovery of ideas. An inductive orientation, whereby theory is developed from facts, is more likely to yield improved theories of crime causes. This approach is illustrated in the author's own work on the age-crime relationship.