Structure Building

Definition

Psychologists call it "rule learning" and "structure building": the habit of extracting the underlying principle behind a specific experience — rather than banking the experience itself as an isolated fact — and linking the resulting principles into a connected structure that can be applied to new, different situations later. Learners who single out the salient, generative lessons from what they encounter and connect those lessons to each other outperform learners who take experiences at face value and fail to infer anything transferable from them.

In the Book

Chapter 6, "Get Beyond Learning Styles," uses this concept to displace the popular "learning styles" theory (that people learn best when instruction matches a fixed visual/auditory/kinesthetic preference), which the book states is not supported by empirical research. In its place, the chapter identifies structure building as a real and consequential difference between learners. It is illustrated at length through Bruce Hendry, a self-made investor who, from a string of disconnected ventures — a childhood firework resale scheme, building and selling a house, managing a rental fourplex, selling microfilm and then stocks — repeatedly extracted general rules ("high demand and short supply," "you have no control of the downside") and assembled them into a structure of investing principles he later applied to size up complex, unfamiliar opportunities. The chapter frames this as a skill that can be taught and practiced, not a fixed trait — closely tied to interleaved, varied practice, which the book shows earlier is what builds the capacity to detect what's common across superficially different problems.

Why It Matters

It distinguishes learning that stays trapped in the specific case from learning that generalizes. Someone who "takes charge of their own education" by relentlessly asking what a given experience teaches beyond itself compounds knowledge across unrelated ventures, while someone who treats each experience as a one-off never builds a transferable structure. This matters anywhere expertise needs to transfer to unfamiliar situations — investing, diagnosis, design, strategy — because the raw volume of experience matters far less than whether the underlying rules were ever extracted from it.