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edenmind

EdenMind is a flashcard app you answer out loud.

Every article here comes with questions. Add one to your library and the app checks your spoken answers, then brings each question back just before you’d forget it. Your voice never leaves the phone.

How it works

  • Discover in the EdenMind app: featured readings, each with its paper cover, subject and reading time, and a question of the day.
    Choose an article
  • An article open in the app: a passage about reinforcement learning, a small diagram of its loop, and under it an offer to check yourself on two questions.
    A ten-minute read
  • A review in the app: a question fills the screen, and under it the app shows that it is listening for the answer.
    Answer out loud
  • The same question answered: the answer, long-term, with the reason under it, and three buttons showing when the question returns: in ten minutes if forgotten, 22 days if guessed, a month if known.
    Check your answer
  • Memory in the app: how recent answers went, a chart of the questions coming due over two weeks, and a curve of what would be kept if reviewing stopped.
    See what’s due next

Mathematics & Logic

  • Secret codes

    A cipher hides a message’s letters but not its patterns, and the patterns are what give it away.

    8 min read

  • Transformers

    Attention, next-word prediction and scale — and the gap between sounding right and being right.

    9 min read

  • Deep learning

    Nobody writes the rules. A network of simple calculations tunes itself on examples until its answers come out right.

    8 min read

All 9 in Mathematics & Logic

Physics

  • The search for a steady beat

    Every clock is something that repeats at a steady pace, plus a way to count the repeats. The rest of the story is the hunt for something steadier.

    9 min read

  • Ibn al-Haytham

    Lamps in a dark room, a tube on a ruler and a book of doubts — how one scholar rebuilt the science of sight.

    8 min read

  • Electricity

    The doorknob zap and the lightning bolt are the same event at different sizes — meet the charge that runs the world.

    9 min read

All 4 in Physics

Chemistry

  • How soap cleans

    Water alone can’t lift grease or break open a flu virus. Soap does both, with a molecule that holds water at one end and grease at the other, and Nablus made it from olive oil and plant ash for centuries.

    7 min read

  • Carbon chemistry

    The one element versatile enough to build diamonds, fuels, plastics — and you.

    8 min read

  • Acids and bases

    One scale from battery acid to drain cleaner, and the truce called neutralisation.

    8 min read

All 4 in Chemistry

Biology

  • How animals find their way

    Every navigator needs a compass and a map. A young bird is born with its heading, but its map comes from experience.

    8 min read

  • Ecosystems

    Nothing lives alone — how energy flows, matter cycles, and a web of life holds together.

    8 min read

  • Blood and breath

    How oxygen reaches every cell you own — and the Muslim physician who first traced its path through the lungs.

    8 min read

All 5 in Biology

Psychology

  • How habits work

    Repeat an action in the same place often enough, and the place starts doing it for you.

    8 min read

  • The testing effect

    We think of a test as a way to measure learning. Done well, it is one of the best ways to cause it.

    6 min read

  • Spaced repetition

    Memory fades along a curve. Coming back at the right moments bends it.

    7 min read

All 6 in Psychology

Society

  • The medium is the message

    Why a light bulb, a printing press and a television screen change people, whatever they carry.

    8 min read

All 2 in Society

See all 30 articles