---
name: "principle-exhaust-the-design-space"
description: "Apply when facing a novel UI interaction or architectural decision with no precedent in the codebase. Build 2-3 competing prototypes and compare side by side before committing."
---
> Codex host: Follow [CODEX.md](../../CODEX.md) for applicability, permissions, and supported tools. Read only the references needed for the current action.

# Exhaust the Design Space

It also applies to product design decisions where user experience depends on feel, not logic.