Im wondering that if we are the brain why we cant control things like pain and our immune system.
In: Biology
Actually, there’s a very good reason for not evolving such things. It’s the same reason why when you drive a car, you don’t control each spark in the engine, you don’t control when the cooling fan turns on and off.
Even if there were a “spark now” indicator, it would be an overwhelming task.
Similarly ot would be an overwhelming and often too slow task to control your body. Where would the level of control be? Do you really want to control each digesting cell in your body? Or just a big patch of cells in your guts? Do you want control over the immune system but not the liver? Or the liver too?
You see, making a high level decision for things that work fine when automated would make it risky. What if you don’t feel like being a bit sick and you don’t turn on the immune system, but then the virus kills your liver? What if you accidentally call for too much fever? Or you stop your heart?
People living without pain are in continuous hazard of harming themselves unnoticed. They must consciously check themselves for wounds and often die of unnoticed accidents (like, cooking yourself alive on the sun unnoticed). Evolution doesn’t give you this decision because who would turn on pain when you can turn it off? But then you endanger yourself, so if evolution ever gave this decision, that species went extinct.
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