Every topic ranked by one score axis at a time.
Scores are relative 0–100 marks within this atlas — for browsing, not advice.
How well the method is backed by learning science.
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How fast a motivated learner feels a first lift.
How much sustained work the method asks (higher = harder).
How well it maps onto high-stakes listing or multiple-choice exams.
Long-horizon memory, not next-day cram.
How little setup a first-week user needs.