# \#use-cases

**URL:** https://diyrvforum.com/tag/use-cases/119.md

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## [Use Cases and First Principles](https://diyrvforum.com/t/use-cases-and-first-principles/316)

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**Author:** [@Matt](https://diyrvforum.com/u/Matt)\
**Replies:** 2\
**Last updated:** [April 25, 2026, 8:51am UTC](https://diyrvforum.com/t/use-cases-and-first-principles/316 "2026-04-25T08:51:22Z")

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The purpose is to provide a foundation for the Why questions, and getting to First Principles. The detail level is sufficient to justify requirements but also specific enough to define future requirements. “Question yo…