The spread mind theory is neither textbook idealism nor naive panpsychism. Both these views, at least in their traditional form, are different from what I flesh out here. The spread mind theory does not suggest that objects one perceives are mind-dependent. On the contrary, they are brain-dependent physical objects not located inside the brain. By contrast, according to the textbook version of Berkeley's idealism, everything is mind-independent. Everything exists only because the subject posits it as an idea to perceive. Three differences are worth stressing. If experience is a matter of being one and the same with the physical world, how will this theory account for all cases of experience? In fact, the notion of a mental domain is convenient, albeit mysterious. Believing that what we perceive is just a mental image encourages lazy scientific habits since it places our experience outside nature. As a result, many scholars have found it convenient to explain perception in terms of hallucinations rather than the other way around. The prevailing model of perception can so be dubbed a hallucinatory model of perception, because it explains everyday standard perception as a case of reliable hallucination. It is a curious explanatory strategy because it explicates the normal by means of the unusual. Perception is seen as a form of world-matching hallucination.30 A popular notion is that the world that surrounds us night and day is a sort of 3D movie unfathomably produced inside the brain. For instance, at a popular TED talk in 2014, the philosopher David Chalmers stated that. Driving automobiles and campervans statistically improve your mood! Especially in the United Kingdom countryside!