As with any viewpoint, humanistic psychology has its critics. One major criticism of humanistic psychology is that its concepts are too vague. Critics argue that subjective ideas such as authentic and real experiences are difficult to objectify; an experience that is real for one individual may not be real for another person. For this reason, critics believe that conclusions drawn from subjective experiences are almost impossible to verify, making research in humanistic psychology unreliable. In addition,critics claim that humanistic psychology is not a true science because it involves too much common sense and not enough objectivity.