Salter doubts whether a science of psychology is possible when human behavior is 'so complex that many approaches to it take refuge in deviations from naturalism' and 'when its psychotherapy fails more often than not—in short, neither predicts nor controls but simply does not work'. In practically the very next breath, however, he claims that hypnosis, although the most unnaturalistic aspect of psychology, is its 'most scientific segment'. The fact that further reading yields largely quotations of already well-known concepts of hypnosis but nothing new to clarify any of its problems,