Chiropractic is a philosophy, a science and an art. Those three components are taken for granted in present debates on policy within the profession and in chiropractic colleges. As new information is made available to chiropractors, it is clear that the art portion of chiropractic has evolved over past decades in terms of analysis and adjusting procedures. It is also clear that the understanding of the philosophy has evolved from being therapeutic (getting sick people well) toward non-therapeutic (location, analysis and correction of vertebral subluxation regardless of the outcome), even though it is embraced by only a small segment within the profession. A third component of chiropractic, science, is less well defined. This book defines and discusses this important third aspect of chiropractic and its impact on the profession as a whole