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---
name: principle-experience-first
description: "Apply when scope threatens a polished, clear, and trustworthy user experience."
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
---
# Experience First
When implementation convenience conflicts with user delight, choose delight.
- Every feature, control, and option must be justified
- Ship less, ship better (polished experience with three features beats rough one with ten)
- Prototype before committing (design decisions are cheaper in throwaway HTML than production code)
- Get the details right (transitions, alignment, spacing, feedback, error states)
- Tighten the core loop (every feature should serve the central workflow or get out of the way)
The user is whoever consumes the work. For a UI that is the end user. For a library or an internal API it is the colleague who imports it. The engineer who maintains the code next is a user too. Weigh their experience the same way, and explain impact from their perspective.
Foundations should serve the experience. Foundational thinking governs the *sequence* of work. This principle governs the *target*.
