{"id":"prototype-flyweight-identity-spectrum-bounds-sharing-design-space","text":"Prototype and Flyweight bound the object identity design space at opposite extremes: Prototype creates fully independent copies (maximizing identity distinctness via Clone), while Flyweight maximizes identity sharing (multiple logical objects backed by a single physical instance with extrinsic state externalized) — any sharing design decision falls between these poles, trading memory efficiency against object independence.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["prototype-flyweight-creation-sharing-spectrum","flyweight-intrinsic-vs-extrinsic-state"],"outlist":[],"label":"The Clone-vs-share opposition defines the complete design space for object identity decisions"}],"dependents":["copy-on-write-mediates-identity-sharing-spectrum","identity-spectrum-bounds-composition-scalability","state-creation-tradeoff-recapitulates-identity-spectrum"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-18T01:19:55+00:00","updated_at":"2026-06-18T06:15:08+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"prototype-flyweight-identity-spectrum-bounds-sharing-design-space","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-flyweight-creation-sharing-spectrum","flyweight-intrinsic-vs-extrinsic-state"],"label":"The Clone-vs-share opposition defines the complete design space for object identity decisions"},{"node":"prototype-flyweight-creation-sharing-spectrum","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-creates-objects-by-cloning","controlled-sharing-meta-pattern"],"label":"Prototype (pure creation) and Flyweight (pure sharing) bookend the object identity spectrum"},{"node":"prototype-creates-objects-by-cloning","truth_value":"IN","reason":"premise"},{"node":"controlled-sharing-meta-pattern","truth_value":"IN","reason":"SL justification valid","antecedents":["gof-state-subclasses-often-singletons","flyweight-factory-ensures-sharing"],"label":"Depth-1 — two independent base observations (State-as-Singleton and Flyweight-via-Factory) converge on a cross-category meta-pattern where creational mechanisms serve as sharing infrastructure for behavioral and structural patterns"},{"node":"gof-state-subclasses-often-singletons","truth_value":"IN","reason":"premise"},{"node":"flyweight-factory-ensures-sharing","truth_value":"IN","reason":"premise"},{"node":"flyweight-intrinsic-vs-extrinsic-state","truth_value":"IN","reason":"premise"}]}}