Philosophy / Unit 5 Philosophy 0194 short lesson, about 20 seconds
The Brain Criterion
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The idea
The brain criterion refines the body theory: you go where your brain goes, because the brain carries what matters—memory, character, mind.
In practice
In transplant fiction, the person wakes where the brain went, not where the heartbeat stayed. Hospitals would agree.
Where people slip
The refinement concedes the point: the brain matters as the mind's carrier—inviting the purely psychological theories next.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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