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.
Product Origin and Identity
Rejecting generic AI coaching and defining Stand Partner as bounded between-lessons supportThe product will not compete primarily as a general-purpose AI violin expert capable of answering any question and generating broad practice advice.
The product’s primary problem space is the interval between moments of human instruction.
The app will not present itself as a replacement for a qualified violin teacher.
Adopt Violin Stand Partner as the product name and organizing relationship.
Use distinct metaphoric systems for distinct products.
The app’s promise is not mastery, instant diagnosis, or comprehensive instruction.
Audience Evolution
Returning players, developing players, parents, and actor-sensitive routingThe initial self-directed audience includes returning adults and developing players who can articulate practice concerns but need continuity and structure.
Parents helping children are not secondary users.
Advice suitable for a trained player cannot automatically be presented to a parent or novice helper.
The app may support multiple levels, but the same guidance should not be delivered identically to all users.
Physical-action routes at launch should remain violin-specific.
Daily Ritual and Page Architecture
Five-minute page turns, multiple open pages, and one current action per pageDo not make the daily product a large AI-generated practice plan.
The primary daily action should generally be completable in five minutes.
The app must distinguish the action that constitutes today’s commitment from additional work the user may choose.
Allow multiple active practice pages.
Users select how many pages they want open.
Each open page may contain extensive history but only one current action per day.
Do not regenerate the day’s plan continuously.
Today is the center of the product.
Coach and Conversational Authority
Coach as orchestration layer with visible corrigibility and attribution boundariesCoach is powerful but should not become the whole product.
Avoid generic encouragement.
The AI should be correctable without defensiveness.
Verified Ben content must remain distinguishable from AI-generated explanation.
The system may not invent Ben-specific stories, memories, quotes, motives, or positions even when explicitly asked to be creative.
YY Method as Runtime Behavior
Human first, AI second translated into natural violin practice behaviorThe AI can execute cognitive and organizational work but cannot take final judgment from the user or appropriate human authority.
The app is governed by: Capture; Why; Why-Not; Commit; Timestamp.
The system must ask what happened before concluding what it means.
When experimentation is appropriate, change one variable and preserve a path back.
The YY Method should remain usable directly from the website.
Memory and Longitudinal State
Visible page history, approved durable memory, and contextual resurfacingThe AI should not treat the entire conversation as durable memory.
The user must be able to recover context even when the AI forgets.
Material memory writes should be visible and correctable.
Memory should be contextual, not constantly visible.
Corpus and Knowledge Provenance
Reviewed segment-level source corpus and permission to say no exact source was foundDo not rely on the LLM to search Ben’s entire corpus and generate a confident answer without reviewed structure.
Break Ben’s existing videos into addressable teaching segments.
Send users to the exact relevant segment rather than a full long video.
The system must not force a source match.
Defensive Judgment and First Response
Behavioral boundaries, Approved Compacts, deterministic authorization, and no-match as successThe app does not need to solve every problem.
Safety disclaimers are insufficient if the model can still generate unrestricted advice.
Ben’s reviewed lived-experience judgments should be encoded in bounded knowledge units.
The AI may gather context conversationally.
The system must not stretch a Compact to fit an uncertain case.