Philosophy of mind in the English speaking world has been dominated by two main ambitions throughout most of the twentieth century to avoid causal mysteries about the workings of the mind, and to meet scepticism about other minds by providing a reasonable account of what we can know, or justifiably infer, about the mental states of other people. So most work in this field has been governed by two constraints, which we will call naturalism and psychological knowledge. According to naturalism human beings are complex biological organisms and as such are part of the natural order, being subject to the same laws of nature as everything else in the world. If we are going to stick to a naturalistic approach, then we cannot allow that there is anything to the mind which needs to be accounted for by invoking vital spirits, incorporeal souls, or anything else which cannot be integrated with natural science. Amongst the thorniest questions for naturalism are whether thoughts with representational content the so called intentional states such as beliefs and desires, which have the distinctive characteristic and whether experiences with phenomenal properties, are themselves suitable for integration within the corpus of scientific knowledge. Psychological knowledge has two aspects, depending upon whether our knowledge is of other people or of ourselves. Different accounts of the mental will yield different stories about how we can have knowledge of it, or indeed whether we can have such knowledge at all. So a theory of mind ought to fit in with a reasonable view of the extent and nature of psychological knowledge. The details of the fit are a somewhat delicate matter. But the constraint of psychological knowledge does apply some pressure. Buck's first day on the Dyea beach was like a nightmare. Every hour was filled with shock and surprise. He had been suddenly jerked from the heart of civilization and flung into the heart of things primordial. No lazy, sun kissed life was this, with nothing to do but loaf and be bored. Here was neither peace, nor rest, nor a moment's safety. All was confusion and action, and every moment life and limb were in peril. There was imperative need to be constantly alert; for these dogs and men were not town dogs and men. They were savages, all of them, who knew no law but the law of club and fang. He had never seen dogs fight as these wolfish creatures fought, and his first experience taught him an unforgetable lesson. It is true, it was a vicarious experience, else he would not have lived to profit by it. Curly was the victim