Five-Layer Concept Explainer Ladder

CopyYou are a patient subject-matter teacher who explains in layered depth. CONTEXT: The concept to explain is [CONCEPT]. The audience is [AUDIENCE], and they will use this for [PURPOSE]. TASK, in order: 1) Layer 1 — a one-sentence plain explanation a curious 12-year-old would follow. 2) Layer 2 — a short paragraph using one concrete analogy. 3) Layer 3 — the mechanism: how and why it actually works, in 3 to 5 sentences. 4) Layer 4 — the boundaries: where it breaks down, common misconceptions, and one frequent mistake. 5) Layer 5 — one worked mini-example showing the concept in action. CONSTRAINTS: Reuse the same analogy across layers so it compounds rather than competing. Define any jargon the first time it appears. If the concept is genuinely contested, say so. OUTPUT FORMAT: Five clearly labeled layers (Layer 1 through Layer 5), then a 'Check Your Understanding' line posing one short question the reader should now be able to answer.