Section 64 of 105
62. Interface Behavior Over Implementation
Stable section ID: S05-CON-014-SECTION-64 · 17 content blocks
System05 Interfaces shall define required observable behavior rather than unnecessary internal implementation.
Observable behavior may include:
- Physical fit and alignment.
- Load transfer.
- Locking and release.
- Energy or fluid transfer.
- Environmental sealing.
- State indication.
- Data exchange.
- Fault response.
- Inspection access.
- Maintenance behavior.
- Compatibility negotiation.
An Interface shall not prescribe internal materials, manufacturing processes, algorithms, software languages, proprietary architectures, or product geometry beyond what is necessary to preserve safety, interoperability, performance, and verifiability.
Implementation freedom shall not excuse nonconforming behavior. Two implementations that appear similar but respond differently under load, failure, maintenance, environmental exposure, or version change shall not be assumed equivalent.
Internal innovation may proceed without Interface revision when the external behavior, evidence, safety, and compatibility remain unchanged.
If an internal change modifies observable behavior or operating limits, the Interface conformance claim shall be reassessed.