AlbertKLloyd wrote:
If there is a brain, then there is a reality beyond what the brain determines
Exactly! If one was to ask the question 'What is reality?' ... there really is no simple answer.
I believe (trying to not be arrogant here but this is as close to the truth as possible) that reality begins and ends with the interpreter. Our brains use our 5 senses to perceive the reality we have grown to know. But lets break this down briefly.
Our sight: We can only see the visible wavelength of the electromagnetic spectrum, ~400-800nm. If there is an object that ONLY emits light outside of that range, it becomes invisible to us. Does that mean it is not real and does not exist? To our brain the answer is yes, but in physical space the answer is no.
For example, most snakes can see infrared light. To the snake, an object emitting only infrared light is real, to us it would be invisible and thus not real if we cant see it (from a distance not using other senses obviously). Therefore we are seeing 2 different realities because the brains of snakes and humans perceive things differently.
Also, I am not claiming to be a physicist, but there is a known anomaly that nothing in this universe exists without definite properties until an observer looks at it. Einstein once said, "Is the moon still there when no body looks?" ... Niels Bohr I believe answered of course it is. Einstein replied, "can you prove to me the opposite?" Obviously you can not prove the opposite. This has been further proved with quantum mechanic experiments in which particles can exist in 2 places at 1 time (see quantum computing). Furthermore, look into the double slit experiment
https://www.youtube.com/watch?v=TT-_uCLwKhQ. Last example, take the 2004 Sumatra Tsunami for example. Humans had no idea it was coming yet most all of the local birds and animals ran away long before it reached land. They had a 6th sense to know that something was coming. In effect, their reality was different than ours because they knew something we did not even though the same information was present, we just were not able to process that information. Therefore, there is a difference in reality between different brains.
Last last mini example... 'normal' human vs a schizophrenic person. The 2 peoples brains process information differently so experience a different reality.
I have an endless amount of examples so I will pick one more. Birds (not mammals) and bats (which are mammals) navigate by using the magnetic field. To them, this is a reality that they use to survive. To humans, we can not see this as part of our reality until we get old of a magnet. All of this shows how reality is different depending on the user, and the users senses.
As I previously mentioned, our brain has only evolved enough sensory information to keep us alive enough to pass on our genes. Anything beyond that was not necessary so it stopped at the typical human brain today. We need to use sophisticated equipment to detect other parts of reality that our brain can not process. For example, telescopes, microscopes, neutrino detectors, etc.
So to answer your question... YES our brains can determine that we can not determine reality effectively, and this is why we have had to build such equipment to see it.
Intelligent life is the universe trying to understand itself.