Imagine that an astronaut goes into space to find the limit of the universe. He aims to reach the final frontier, to know what lies beyond background radiation, which would, according to the Big Bang theory, the limit of the physical universo.
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To see if you can accomplish your feat, dive into your brain, as if we were an invading spirit.
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Done! Right now we are inside the brain of an astronaut and perceive the stellar universe he perceives. In this case, we are concerned of the controls and instruments.
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In this other picture we see the universe, as he sees it from a distance, inside the ship; even a lock of hair falling on our left eye. (Please present this image N° 4 for the explanation to come later).
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If we are consistent with what we perceive, our astronaut is locked in his subjective universe. although it progresses forward your ship will always be at the center of his mental universe. This universe varies in pictures, near stars, nebulae etc. .. leaves behind and give you the feeling that moves through a physical universe, but since in reality the universe is contained in your brain will always be stationary in the center of his mental world.
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This image may help to clarify what happens: it perceives the universe astronaut, who alone can tell is always happening inside his head.
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You'll never get out of it, but reach the ends of the cosmos. You can not do what the picture shows below: to escape from the subjectivity.
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You can not escape his own inner world to behold that which is out of your brain. His mental world is unlimited but finite and constrained his skull.
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No one can escape the universe of your mind and see the "out there".
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However, the above four images (6,7,8 and 9), are merely explanatory, since no one can see what happens inside the skull of another, then all we have is the perception of what an astronaut ... he perceives. (Remember the image N° 4 I asked you to remember? It is the same as No. 10 below)
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According to neuroscience, the visual experience is actually two dimensional, like a photogram or a picture that is generated in the occipital lobe. Then, everyone astronaut, which actually receives, can be conceived as a series of events of consciousness, similar to photographs or frames solitary, in an unfamiliar environment.
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No can not even say or assume as in the previous explanatory sheets of a real brain and real skull which can escape, because in fact, we are just a succession of events of consciousness as well as sensed Hume and Avenarius.
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So, for that seems counterintuitive, but in full agreement with the current neuroscientific explanation, which assumes that within the brain we perceive the universe is generated, leads to a kind of cosmological solipsism ... the Cosmos, by vast and boundless enough, happens, has happened and will happen within our skull (cranium whose existence, so explained above, we can never prove or check).
And as far as I know and I feel ... there we are alone.
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