Maybe we are not fully aware of this fact: The neuroscientist did not discover the existing of a dream by studying the brain. He did not discover the existing of feelings by studying the electric path in the nerv systems. His knowledge of the existence of dreams came from another, underestimated source of knowledge in this world. His own subjective experience, and only that tool of knowledge, let him discover the existence of 'dreaming'. His most sophisticated scientific tool in his hand could not discover that at all. His scientific tool was limited, where his subjective experience is the first tool to discover 'a non-measurable world' witch can, by definition, not be discoverd by a measuring device. Awareness, feellings, imaginagen, fantasy, content of dreams are 'existing entities' in this world, only discovered by this fact: The fact that we are the electrobiochemical materials makes him discover this part of the world. The neuroscientist is these materials (a wired brain), so he discovers this world of subjective entities, without the need of science at all. We can conclude that the subjective experience is underestimated being a tool for discoveries in nature. Moreover: the scientific tools of the neuroscientist fale to discover these immaterial things (feelings, dreamcontent, etc) in a wired brain. So, there is at least one non-scientific tool in this world, "being the bioelectrochemical materials itself" wich is or only crucial tool to discover parts of this world, which were otherwise undiscovered. Our own subjective experience is the only door to this aspect of our world. Wich other non-brainlike materials in this world are 'experiencing parts of this world' we cannot discover with our scientific tools? How can we know that? conclusion: our scientific tools are limited to discover more about what exists and what doesn't exist. No tool can discover 'subjective experiences' in non-brainlike interacting electrochemical materials in this world.