History (2)
  - Tim Bray published 14
    Theses on this issue.
    
      - 1. It is not strictly necessary for namespace documents to
      exist.
- 2. Namespaces vary widely in semantic effect.
- 3. Namespaces have definitive material.
- 4. It is good for namespace documents to exist.
- 5. Namespace names should not be relative URI references.
- 6. Namespace names should not be URNs.
- 7. The definitive material for a namespace is normally distributed
        among multiple resources.
- 8. Content-negotiation is not a sufficiently powerful tool for
        selecting definitive-material resources.
- 9. Namespace documents should provide a level of indirection.
- 10. Namespace names are frequently not dereferenced at
      run-time.
- 11. Anyone should be able to write software to process a Web
        resource.
- 12. Namespace documents should be human-readable.
- 13. Namespace documents should not favor the needs of any one
        application or application class.
- 14. Namespace documents should not be "schemas".