The big idea
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Knowledge that predicts is organised knowledge
Two people can know the same facts and differ enormously in what they can do with them.
Learning How to Learn · Lesson 1
Building Mental Models
beginner⏱ 17 min · 7 cards
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Model or Memorise?
“How interest rates affect borrowing, spending, and prices.”
Does this material have a "why" to derive it from?
Decide which material has a "why" to derive it from.
Key term
The test
How do you know you have a model rather than facts?
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Prediction
Ask what it predicts. If it predicts nothing you did not already know, you have a fact.
Chess, and what expertise really is
Experts failed on random boards
Experts reconstructed positions from real games far better than novices — and did no better on randomly arranged pieces.
The advantage was organisation, not memory. Encouraging, because structure can be built deliberately.
Nuance
Why being told is not enough
Common misconception
A faulty model works on every case you have met, which is why it survives correction. Repair usually needs a prediction it gets wrong.
Quick check
What is the test of a mental model?
You did it
Nice work
Mark this lesson complete to track your progress.