Philosophy / Unit 2 Philosophy 0060 short lesson, about 20 seconds
The Brain in a Vat
Captions available
The idea
The brain-in-a-vat scenario updates the evil demon: a brain wired to a perfect simulation would have experiences identical to yours in every detail.
In practice
Every sunset, conversation, and coffee—electrical signals from the machine. From inside, no test could ever distinguish vat from world.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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