Theory Card 028 — Worked Examples / Structure
Research lens
Worked-example research suggests that seeing a solution in a structured way can speed learning, especially early in skill development. In the Structure stage of BASIC, the goal is to externalize a plan, invariant, or architecture. That makes this concept especially relevant here, because it shapes how much mental work the candidate is trying to carry at once and what gets made explicit.
Why it matters in SWE interviews
In interview prep, examples are most powerful when the learner can see where the solution was broken down, chosen, and verified. BASIC turns solved problems into reusable templates instead of one-off editorial answers. In practice, Structure is where the candidate should ask: What is the sequence, helper structure, invariant, or component map that will carry the solution? That question acts like a cognitive boundary. It protects the answer from turning into an unstructured search.
BASIC move
A strong move here is to make the plan visible before full execution. For Worked Examples, that means deliberately naming the important units instead of juggling them implicitly. The interviewer sees cleaner reasoning, and the candidate benefits from reduces hidden-state thinking and makes reasoning inspectable.
Common miss
The miss is copying code without extracting the decision path that produced it. When that happens, the candidate usually feels busy, but the answer is actually becoming less inspectable.
Practice prompt
“While practicing, pause at the Structure step and explain how Worked Examples changes the way you would handle the prompt.”