EduEcoEchoes of knowledge
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EduEco · Echoes of knowledge

An adventure where you are the subject

Your brain lies to you. Music manipulates you, movies fool you, other people sway you, and infinity is waiting. You don’t read a lesson here: you live through experiments.

Start the journeySee the journey

4 adventures · 19 episodes · about 3 hr 56 min of travel

Stare at the cross. Keep your eyes still.

20 s

The journey

From the back of your eye to the edge of the universe

Four adventures that follow one another like the seasons of a series: each one ends on the question that opens the next. Start with the first… or with the one that calls to you.

  1. Adventure I · 4 episodes · about 50 min

    The Great Illusionist

    What if everything you perceive were a hallucination… a perfectly tuned one?

    1. The Hole in Your EyeClose your left eye: a dot is about to disappear.
    2. Memory, the StorytellerRead fifteen words. You will remember a sixteenth.
    3. Who Decides?A bat and a ball cost $1.10. Answer quickly.
    4. The Ghost in the MirrorCross two fingers and touch your nose.

    Not started yetPerception · Neuroscience · Psychology · Philosophy

  2. Adventure II · 5 episodes · about 64 min

    The Emotion Factory

    Why do we cry over things that don’t exist?

    1. The ChillsA melody stops before the end. You know how it ends.
    2. Four Chords and a LoopFour chords. Hundreds of hits. Listen.
    3. Twenty-Four Lies a SecondDoes a galloping horse ever have all four hooves off the ground? Place your bet.
    4. Once Upon a TimeThree geometric shapes move around. You will see a drama.
    5. Red Does Not ExistWhat color are these strawberries? Check with the eyedropper.

    Not started yetMusic · Film · Storytelling · Painting · Neuroscience

  3. Adventure III · 5 episodes · about 62 min

    Other People

    Do you really think for yourself?

    1. The Sixth SubjectFive strangers answer before you. They are all wrong.
    2. The Christmas TruceA stranger offers you $2 out of $10. Do you accept?
    3. Words That Make You See“Bouba” or “kiki”? You already know.
    4. The Stone at the Bottom of the SeaThis $50 bill: what is the paper really worth?
    5. The Pigeon and the ScreenA button. Nothing forces you to press it.

    Not started yetPsychology · Economics · Language · History

  4. Adventure IV · 5 episodes · about 60 min

    Facing Infinity

    What can a lump of matter understand… about the infinity it is made of?

    1. The Infinite HotelAre there more whole numbers than even numbers?
    2. Light That HesitatesGrains of light facing two slits. Where do they land?
    3. Elastic TimeCount ten seconds in your head. We are timing you.
    4. The Pale Blue DotHere is a photo. Find Earth in it.
    5. Who Is There?Close your eyes. Look for the one who is thinking.

    Not started yetMathematics · Physics · Astronomy · Philosophy

The laboratory

No time for an episode? One minute is enough.

46 experiments to try right now, on yourself: make a dot vanish inside your own eye, stand up to a group that is wrong, find the Earth in a photo taken 3.7 billion miles away.

The whole laboratory

  • You first

    Every episode opens with an experience you live through: an illusion, a bet, a test. The explanation comes afterward, once you have already felt the phenomenon.

  • Not a lesson: a film

    Full-screen shots, revelations, sounds, archive films. No walls of text: you move at the pace of your discoveries, and every episode ends on a question.

  • From the brain to the stars

    Psychology, music, film, stories, color, language, money, mathematics, physics: human knowledge and culture, all in one piece.

Your dossier

What the journey reveals about you

Every experiment leaves a trace in your dossier, kept in your browser alone. At the end of the journey, it will tell you what your brain invented, erased, believed and understood.

Open your dossier
  • Still blankYour first trace will appear here after your first experiment.

Our stance

Knowledge is not a list of subjects to recite. It is the greatest adventure of the human species, and it is happening right now, behind your eyes.

How are the adventures made?