Philosophy / Unit 2 Philosophy 0069 short lesson, about 20 seconds
The Argument from Illusion
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The idea
The argument from illusion: the senses sometimes deceive—a straight oar looks bent in water—so perception alone cannot guarantee how things are.
In practice
The oar, the mirage, the railway tracks meeting at the horizon: familiar sights, reliably wrong.
Where people slip
Occasional error does not prove global unreliability. The argument opens a question; it does not close one.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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