comparative-advantage SKILL.md skillA

comparative-advantage from deciqai/knowledge-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add deciqai/knowledge-skills/comparative-advantage@git:20261025.cb4e537

Pins git:20261025.cb4e537 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
deciqai/knowledge-skills
Path
comparative-advantage/SKILL.md
Versions recorded
5
Latest version
git:20261025.cb4e537, committed Oct 25, 2026
First version recorded
Jul 16, 2026
Size
7,413 bytes
Repository stars
13
License
MIT

Activate when: user says 'should I do this myself or delegate,' 'I'm the best at X so I should do it,' 'should we outsource or build in-house,' 'how should we divide work on the team,' 'is it worth hiring someone for this.' Do NOT activate when: the situation is genuinely single-task with no trade-off; the user is asking about competitive strategy between companies (use Porter's Five Forces instead). More: deciqai.com/s/comparative-advantage.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Comparative Advantage

## Overview

Mutually beneficial specialization depends on *relative* productivity, not absolute. Even if you are better than everyone else at every task, you gain by focusing on tasks where your opportunity-cost ratio is lowest and delegating the rest. The right question is not "am I better at X than them?" but "am I better at X *relative to Y* compared to how they are?"

Proved by David Ricardo (1817); called "the only proposition in economics that is both true and non-obvious" by Paul Samuelson (1969).

Composes with [`opportunity-cost`](../opportunity-cost/SKILL.md), [`pareto-principle`](../pareto-principle/SKILL.md), [`circle-of-competence`](../circle-of-competence/SKILL.md), [`theory-of-constraints`](../theory-of-constraints/SKILL.md).

## When to Use

- Founder time allocation across activities; team division of labor
- Build vs. buy / in-house vs. outsource decisions
- M&A decisions; international operations / supply chain design (e.g. AI-chip re-shoring, chip export controls, semiconductor vertical integration)
- Personal career or skill specialization decisions
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add deciqai/knowledge-skills/comparative-advantage@sha256:28586e0ae1c1a391

The line at the top of this page pins the label git:20261025.cb4e537, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fjrehgn2zziek7ga.svg)](https://markdownregistry.com/a/art_fjrehgn2zziek7ga)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jul 16, 2026 and Oct 25, 2026, about one every 25 days.

versioncommittedcommitsizeaudit
git:20261025.cb4e537 latest2026-10-25 cb4e537 7,413 BA view · diff
git:20260816.be846772026-08-16 be84677 7,413 BA view · diff
git:20260719.ed3f8562026-07-19 ed3f856 7,413 BA view · diff
git:20260717.2ed857e2026-07-17 2ed857e 7,413 BA view · diff
git:20260716.fac12bf2026-07-16 fac12bf 7,413 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7413 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

deciqai/knowledge-skills · 13 stars · license MIT · pushed 2026-10-25 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fjrehgn2zziek7ga
GET https://markdownregistry.com/api/v1/resolve?ref=deciqai/knowledge-skills/comparative-advantage
GET https://markdownregistry.com/api/v1/blob/28586e0ae1c1a3917c4303203d315a77433755c28a0d4231dddbb38e9c6eb121

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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