Sociology is the scientific study of human society and social behavior. It uses scientific methods like surveys, interviews, and observation to accurately describe and predict social phenomena. According to early theorists like Auguste Comte and Durkheim, sociology is a science because it applies scientific methods to understand society in a systematic, objective way. Comte believed that human thought progressed through theological, metaphysical, and positive/scientific stages of understanding, and that sociology exists in the scientific stage. Karl Marx and Herbert Spencer also contributed influential theories to the development of sociology as a science.