principle-subtract-before-you-add

v2026.09.25

Apply when sequencing an addition, refactor, or rewrite. Remove dead code, redundant validators, and stub references first, then build on the simpler base.

GitHub
Install command
npx skhub add michael-denyer/principle-subtract-before-you-add
Markdown
SKILL.md

Subtract Before You Add

When evolving a system, remove complexity first, then build.

Why: Adding to a complex system compounds complexity. Removing first leaves less code, reveals the essential structure, and usually makes the next design obvious. Default to subtraction.

Make simplification a continual investment. Leave the design slightly simpler and more capable behind the same or smaller surface than you found it.

The pattern:

  • Sequence removal before construction
  • Cut before you polish (get to the minimum before investing in quality)
  • Design for observed usage, not speculative edge cases
  • No speculative validators, parsers, or guards beyond what the spec demands
  • Simplify prompts (remove redundant instructions, excessive templates)
  • When a reference has no novel content, delete it rather than leaving a stub
Discovery
Tags

No tags published for this skill.

Version
Latest version metadata

Version

v2026.09.25

Published

Sep 25, 2026

Category

Uncategorized

License

MIT

Source path

plugins/pstack/skills/principle-subtract-before-you-add

Default branch

main

Latest commit

7b08003

Tree SHA

ad5f492