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---
name: principle-redesign-from-first-principles
description: "Apply when a requirement breaks a foundational assumption and needs coherent redesign."
license: MIT
metadata:
author: jstack-maintainers
source: michael-denyer/pstack-claude
source-version: "0.9.130"
source-commit: d88063f3355a5ecff0e6dbb890a11bab4b08bc2e
owner: software-factory
risk: low
capabilities: jstack,engineering-principle
user-invocable: false
---
# Redesign From First Principles
When integrating a change, don't bolt it onto the existing design. Redesign as if the requirement had been a foundational assumption from the start.
- Read all affected files and understand the current design
- Ask: "if we were writing this from scratch with this new requirement, what would we build?"
- Propagate the change through every reference: types, docs, examples, rationale sections
- Think about the whole redesign, then deliver it incrementally
This is the method for preserving option value when integrating changes into an existing design.
