Terms of use

Content

The Periodic Stack of Verification, the seven axes, the worked artifacts, the escalation-ladder tiers, the research findings, the genealogy, and the bibliography on this site are © 2026 David Charlot and Open Interface Engineering, Inc. The cited theorems, measurements, and traditions are themselves the work of their authors and communities; citations are provided throughout.

Use

You may read, link to, and quote this material with attribution. Republication in full or substantial part requires written permission. Educational use under fair-use principles is welcomed.

No warranty

The classification and findings are offered for educational and research purposes. They are positions in a coordinate space, not engineering specifications. No warranty, express or implied, is offered for any use beyond reading.

Contact

For questions or permissions, write to [email protected].