Philosophy / Unit 2 Philosophy 0057 short lesson, about 20 seconds
The Dream Argument
Captions available
The idea
The dream argument: since dreams can be indistinguishable from waking experience, experience alone cannot certify that you are awake now.
In practice
Descartes recalls dreaming he sat by the fire—while asleep in bed. Nothing inside the experience gave the game away.
Where people slip
The argument does not claim you are dreaming—only that you cannot rule it out from the inside.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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