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MethodViolinCases & ADRsBen Chan
← Case Studies/Case #012 · ADR Registry

Violin Stand Partner — Building a Human-Judgment System Between Lessons

Case #012 · 42 knowledge artifacts · July 17, 2026 · YY Method™ Home Edition v2.3

In Progress. Public reasoning draft; production implementation and private forensic registry intentionally withheld.

Violin Stand Partner was not created by asking AI to design a violin app. It emerged from human judgments about where AI should help, where it should stop, what evidence it should preserve, and which product obligations had not earned the right to exist.

Case Distillation

Authority

C12-001 – C12-011

The app rejects broad coaching and teacher replacement. Parents become first-class users, but physical-action authority remains actor-sensitive and violin-specific.

Ritual

C12-012 – C12-029

The daily product narrows from comprehensive plans to one page turn. Coach orchestrates intake, reflection, routing, and correction while structured surfaces preserve state.

Protection

C12-030 – C12-042

Memory, source provenance, Approved Compacts, deterministic authorization, and no-match behavior keep the system useful without pretending to know more than it does.

Product Origin and Identity

Rejecting generic AI coaching and defining Stand Partner as bounded between-lessons support

Audience Evolution

Returning players, developing players, parents, and actor-sensitive routing

Daily Ritual and Page Architecture

Five-minute page turns, multiple open pages, and one current action per page

Coach and Conversational Authority

Coach as orchestration layer with visible corrigibility and attribution boundaries

YY Method as Runtime Behavior

Human first, AI second translated into natural violin practice behavior

Memory and Longitudinal State

Visible page history, approved durable memory, and contextual resurfacing

Corpus and Knowledge Provenance

Reviewed segment-level source corpus and permission to say no exact source was found

Defensive Judgment and First Response

Behavioral boundaries, Approved Compacts, deterministic authorization, and no-match as success
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