Developed by philosopher and author Ken Wilber, Integral Theory is a supertheory or metatheory that attempts to explain how the most time-tested methodologies, and the experiences those methodologies bring forth, fit together in a coherent fashion. Integral Theory’s pragmatic correlate is a series of social practices called Integral Methodological Pluralism (IMP). The personal application of AQAL is called Integral Life Practice (ILP). “AQAL” (which stands for “all quadrants, all levels, all lines, all states, all types”) is often used interchangeably with Integral Theory, the Integral approach, the Integral map, the Integral model, and the Integral Operating System (IOS).