# Pattern Cargo Cult

> A defect in which a pattern's name and shape are copied without the forces, contracts and checks that make it work.

Record: `architecture:pattern-cargo-cult`
Kind: anti-pattern
Layer: [Enforcement Core](https://banes-lab.com/records/layer/enforcement-core.md)
Severity: discouraged
Scope: contract_compatibility, correctness_verification
Aliases: Cargo-Cult Pattern Use
Canonical: https://banes-lab.com/ontology#architecture-pattern-cargo-cult

Listed in [Architecture principles](https://banes-lab.com/api/records/architecture.md), after [Golden Hammer](https://banes-lab.com/records/architecture/golden-hammer.md) and before [Lava Flow](https://banes-lab.com/records/architecture/lava-flow.md).

## Repair

- Refactored by: validate_required_forces, add_missing_contracts, rename_if_not_pattern, remove_pattern_shell
- Detected by: ports_without_boundary_rules, plugins_without_contracts, events_without_idempotency, microservices_without_autonomy
- Violated by: Copy named patterns or architecture styles without implementing their required forces, contracts, constraints, or validation gates.
- Measured by: patterns missing their required boundary rules or contracts
- Enforced by: architecture tests that check each named pattern's required contracts

## Severity

- [discouraged](https://banes-lab.com/records/vocabulary/severity-discouraged.md)

## Category

- [Anti-patterns](https://banes-lab.com/records/architecture-category/anti-patterns.md)

## Force

- [Contract compatibility](https://banes-lab.com/records/force/contract-compatibility.md)
- [Correctness verification](https://banes-lab.com/records/force/correctness-verification.md)

## Negated by

- [First-Principles Design](https://banes-lab.com/records/architecture/first-principles-design.md)

## Linked from

- [Algorithm examples](https://banes-lab.com/pag/patterns/algorithm-examples.md)
- [Proxies give way](https://banes-lab.com/disciplined-methodology/ship/when-not.md)
- [Seven controls, seven classes](https://banes-lab.com/software-architecture/decay/seven-controls-seven-classes.md)
- [Anti-patterns](https://banes-lab.com/ontology/principles/architecture-category-anti-patterns.md)
- [Architecture Review / Evolution / Governance Artifacts](https://banes-lab.com/ontology/principles/architecture-category-architecture-review-evolution-governance-artifacts.md)
- [Severity levels](https://banes-lab.com/ontology/schema/the-vocabulary-severity.md)
- [The forces](https://banes-lab.com/ontology/schema/the-forces.md)