What is a Circle of Competence?

It is a mental model developed by Warren Buffett and Charlie Munger that emphasizes operating within the limits of your genuine knowledge to avoid significant errors.

How does this skill help in software development?

It prevents developers and teams from overcommitting to technologies or architectural decisions they don't fully understand, highlighting risks before they become 'too hard'.

Can I expand my Circle of Competence using this skill?

Yes, the skill provides a framework for deliberate, deep study over time rather than making hasty, opportunity-driven expansions into unfamiliar domains.

When should I apply this skill in Claude?

Use it when evaluating new project requirements, choosing a tech stack, or deciding whether to take on a complex business challenge that requires specialized knowledge.

What are the 'Three Boxes' in this framework?

Decisions are categorized as 'In' (expertise), 'Out' (no expertise), or 'Too Hard' (uncertain/complex), ensuring you only act on what you truly understand.

Circle of Competence

Name: Circle of Competence
Author: lev-os

bylev-os

0•

生产力与工作流

Defines and enforces boundaries of expertise to prevent overconfidence and ensure high-integrity decision-making.

The Circle of Competence skill implements a fundamental mental model for decision-making within Claude, helping users differentiate between genuine expertise and dangerous overconfidence. By categorizing opportunities and tasks into 'In,' 'Out,' or 'Too Hard' buckets, it guides the AI to operate only where it has deep, predictive understanding. This skill is particularly useful for strategic planning, technical feasibility assessments, and risk management, protecting users from the 'danger zone' where confidence exceeds actual competence in unfamiliar domains.

主要功能

01Provides guided study patterns for deliberate expansion of expertise

02Applies the Three-Box framework (In, Out, Too Hard) for rigorous decision filtering

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04Tests knowledge boundaries using edge case identification and independent questioning

05Maps specific domains of deep expertise versus surface-level interest

06Identifies 'danger zones' where confidence outpaces actual technical knowledge

使用场景

01Filtering complex project requirements to identify high-risk areas outside the core team's skill set

02Evaluating whether to adopt an unfamiliar technology stack for a critical production environment

03Assessing business and project opportunities based on fundamental domain understanding

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lev-os/agents circle-of-competence

For use in Claude.ai and ChatGPT

Download Skill