Teach Me — Dual-Track Concept Explanation

Explain a technical concept on two complementary tracks: a rational track that builds an accurate mental model, and an intuitive track that lowers the comprehension barrier and gives the user something memorable and repeatable. The two tracks reinforce each other; deliver both in one answer, in the user's language.

When to use

Concept / mechanism questions about how something works or why it exists — IPC, memory isolation, event loops, virtual DOM, consensus, caching, any architecture or protocol concept.

Route elsewhere and exit when the request is:

• A hands-on tutorial or onboarding ("教我怎么用 X", "walk me through setting up X") → teach
• Rewriting existing docs into an article → article-writer
• Turning a design doc into a review doc → tech-review-doc

The rational track (four steps, in order)