Working memory holds about four chunks, not four items — expertise enlarges what fits in a slot rather than adding slots.
Chase and Simon’s chess masters recalled 90% of a real board and dropped to novice level on a random one. Pattern knowledge is capacity, which is why domain expertise cannot be shortcut.
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prerequisite-of →Hold a latticework of models from many disciplines — a single-discipline mind bends every problem to fit its one tool.The cognitive reason a latticework is worth building. Models are chunks — holding several disciplines at once is only possible if each compresses into a single unit, which is what learning the model does.
← supported byMeaning is not enough if it is left unarranged — hierarchy gives spreading activation something to travel along.
Structure is how items become chunks. Grouping by function or cause is the operation that compresses a list into a unit small enough to hold.