scaffolding

The frame a builder stands on while the wall cannot yet hold anyone — and, in learning, the borrowed structure that holds understanding up until it stands alone: a worked example, a given outline, someone else's map.

Two truths travel with the word. Scaffolding is honorable — a beginner without it is just a person falling (linking-thoughts found beginners need borrowed structure before linking pays). And scaffolding is temporary by definition — left up past its day it blocks the light, which the research calls the expertise reversal effect and this castle calls the trade flipping (when-the-trade-flips). It comes down the way it went up: piece by piece, each piece when the wall under it holds.