A Reddit user turned Naur's 1985 programming theory into a Claude Code skill
Someone built a custom Claude Code skill inspired by Peter Naur's classic essay 'Programming as Theory Building.' The core idea is that the knowledge behind code — not the code itself — is what really matters. The skill tries to make Claude understand that context before touching anything.
In 1985, computer scientist Peter Naur argued that programming is really about building a mental model of a system — understanding why things are the way they are, not just what the code says. The code is just a side effect of that understanding, and when developers leave a project, that knowledge walks out the door with them.
This Reddit user translated that philosophy into a Claude Code skill — a bundle of custom instructions that changes how Claude Code behaves. With the skill active, Claude is prompted to first grasp the intent and context behind the code before making any changes. For solo developers who use AI coding tools, this addresses a common frustration: AI edits code correctly on the surface but misses the 'why,' leading to subtle mistakes. It's a lightweight way to bring more human context into AI-assisted coding sessions.
Key points
- Naur's 'Theory Building': programming's real value is the developer's understanding of why code works, not the code itself
- The skill teaches Claude Code to seek out context and intent before editing
- Claude Code skills are custom instruction sets that change how Claude behaves during a coding session
- Targets a real pain point: AI tools often fix the surface without grasping the underlying design decisions
- Solo devs using Claude Code can adapt this skill to pass more context to the AI upfront
Quick term guide
- Claude Code skill
- A set of custom instructions added to Claude Code that teaches it to follow a specific workflow or set of rules for a project.
- Theory Building
- Peter Naur's term for the mental model a programmer holds about why a system is built the way it is — knowledge that lives in the developer's head, not in the code.
- context
- The information an AI uses to understand your request, such as files, notes, and past messages.
- compute
- The server power and chips needed to run AI systems.
- developers
- Developers are people who build software, apps, or websites.
- AI coding tool
- Software that uses AI to help write, edit, or explain code.
- session
- A continuous period of interaction between a user and a computer program.
- AI tools
- Software that can help create text, code, images, or other work.