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Research draft

fourth

vr.tr.fourth · thing-q267984

Let an agent explain the musical fourth, relay its qualities and role from music-theory sources, describe the qualities its aliases name, and distinguish the interval from other intervals and from the ordinal sense of fourth.

Thing Registry XCT.TME

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

Researched by: Claude

Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Understand What a fourth is.

Definition

Definition.

Definition

Definition.

  1. What is a musical fourth, and how does it differ from other intervals and the ordinal fourth? definition
  2. Which quality of fourth is meant? boundary

Qualities

Qualities.

Qualities

Qualities.

  1. What are the perfect, augmented and diminished fourth? definition
  2. Which entry fits the specific quality? action
Theory Theory.

Size

Size.

Size

Size.

  1. How many semitones does each quality of fourth span? provenance
  2. How is interval size measured? measurement

Harmony

Harmony.

Harmony

Harmony.

  1. What role does the fourth play in harmony? provenance
  2. Which references are standard? provenance
Use Use.

Melody

Melody.

Melody

Melody.

  1. How is the fourth used melodically? provenance
  2. Which sources are cited? provenance

Tritone

Tritone.

Tritone

Tritone.

  1. Why is the augmented fourth called the tritone? provenance
  2. Which sources are cited? provenance
Context Context.

Intervals

Intervals.

Intervals

Intervals.

  1. How does the fourth fit among musical intervals? provenance
  2. Which entry fits interval? action

Senses

Other senses.

Senses

Senses.

  1. How does the interval differ from the ordinal fourth? provenance
  2. Is the sense correctly identified? boundary

Classifiers Filled

Family
Thing Registry
Domain
XCT.TME

What it is Filled

In music, a fourth is an interval spanning four notes of a scale, such as from C up to F; the registry aliases name its qualities, including the perfect fourth and the augmented fourth, also called the tritone. The fourth is a basic interval in harmony and melody, and its exact size in semitones depends on its quality, so the quality should be identified. This is the musical sense, distinct from the ordinal fourth in a sequence.

Why it exists Filled

Let an agent explain the musical fourth, relay its qualities and role from music-theory sources, describe the qualities its aliases name, and distinguish the interval from other intervals and from the ordinal sense of fourth.

Distinguishing features Filled

  • Spans four notes
  • Several qualities
  • Basic in harmony
  • Perfect fourth common

What robots and AI may and may not do Derived, awaiting review

May

  • explain the interval
  • relay its qualities
  • relay its role in harmony
  • distinguish it from other intervals

Note: Affordances listed as what may be done; prohibitions collected from the text.

Moral aspects Derived, awaiting review

  • The fourth is a basic interval in harmony and melody, and its exact size in semitones depends on its quality, so the quality should be identified.
  • relay its role in harmony
  • Basic in harmony

Owners Missing, in the backlog

Not described yet. This gap is in the card backlog.

Links to other meta-models Filled

related

  • musical interval - in registry terms
  • fifth
  • third
  • the ordinal fourth

What else AI and robots need to interact with it Incomplete

Identity and identifiers required Missing, in the backlog

Not described yet. This gap is in the card backlog.

Direct properties not applicable Not applicable

  • span: four scale notes note
  • qualities: perfect, augmented, diminished list
  • registry parent: interval note

Plane XCT: no invented physical properties.

Recognition optional Filled

  • An interval spanning four scale steps
  • Perfect fourth, augmented fourth or tritone
  • A fifth or third is a different interval; the ordinal fourth is a position in a sequence
  • Not a visible object; a musical interval, heard between two notes.

Capabilities and actions required Filled

  • explain the interval
  • relay its qualities
  • relay its role in harmony
  • distinguish it from other intervals

Hazards and failure modes required Filled

  • Confusing the qualities
  • Confusing with other intervals
  • Mixing the interval and ordinal senses

Standards and interfaces required Filled

  • Music-theory conventions

Context of use required Filled

  • Naming an interval spanning four scale notes.
  • perfect fourth
  • augmented fourth
  • diminished fourth

Sources Missing, in the backlog

Not described yet. This gap is in the card backlog.

Note: Written from model knowledge without web access; claims are unverified.

Open questions

  • Should the qualities be separate entries?
  • How should the tritone be handled?
  • How should the ordinal sense be signposted?
  • Which entry fits the specific quality?
  • Which entry fits interval?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q267984/spec.json