Prisoners who have only ever seen shadows on a wall take them for reality. Plato’s question is whether we are any different.
1The puzzle
Plato asks us to imagine prisoners chained in a cave since birth, facing a wall. Behind them, a fire throws shadows of objects onto the wall. The shadows are all they have ever seen. Take their seat. Name each object from its shadow, then turn around.
The wall
Behind you
2Take a stand
When you look around the room right now, are you seeing the world as it really is?
There’s no right answer here. Pick the one closest to what you actually think. We’ll test it next.
3The push-back
A few situations designed to test your answer. After each one, you can hold your ground or shift. Watch where you end up.
4The map of answers
You’re not the first to wrestle with this. Tap a thinker to see their answer and the strongest case for it. Open at least two.
5Turn it on yourself
Everyone lives with some shadows: a picture of people, a market, a country or themselves built from a narrow slice of evidence.
Your answers stay in this browser. Nobody else sees them.
6Your question card
Plato’s cave
Are you mistaking shadows for the real thing?
How much of what you take as reality is a shadow: filtered by your senses, your brain, and the sources you trust?
The main answers
Common-sense realism: The world is pretty much as it looks.
Aristotle: Knowledge starts with the senses; reason organises what they give us.
John Locke: Some qualities, like shape and motion, are really in objects; others, like colour and taste, are in us.
Modern neuroscience: The brain constantly predicts what is out there and uses the senses mostly to correct its guesses.
Immanuel Kant: We know things only as they appear to us, never as they are in themselves.
Plato: The physical world is a world of shadows. True reality is the world of Forms, reached by reason.
Where you stand
Your note
Notice this week
Notice one strong opinion you hold this week and ask: what wall am I watching, and what is casting the shadow?