First Principles Fieldbook
Topic

Design and Testing

Engineering evidence answers a particular question against a particular reference. This section shows how requirements, intended use, and test results fit together without turning every check into the same vague bucket. The focus is reasoning and documentation. Any physical test must use an approved plan, the correct environment, and people qualified for the hazards involved.

Design and Testing

Verification vs Validation in Engineering

In engineering, verification asks whether a product meets its stated requirements; validation asks whether it fulfills its intended purpose in its…

4 min read · 2026-07-19