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Coma patients are just a subset of people without awareness.

Awareness is not binary. My friend going into diabetic coma exhibits a degree of awareness until you realize her answers to my questions have stopped and you have to call the ambulance.

I do agree that the brain optimizes routine things, thus my question is it not possible to function without awareness (ie sleepwalking through life).

I am going from books like these: https://www.amazon.com/Philosophy-Flesh-Embodied-Challenge-W...

Here's a premise: Most(90+%) of our thought occurs subconsciously . Is it not possible function 100% subconsiously?

Think about sleeping on a math problem and the solution coming to you suddenly.

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