── ── Strategy
Comparative Advantage
Mutually beneficial specialization depends on relative productivity, not absolute. Even if you are better than everyone else at every task, you gain by focusing where your opportunity-cost ratio is lowest and delegating the rest. The right question is never 'am I better at X than them?' but 'is X the highest-value use of my time compared to what only I can do?'
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How it works
Step 1 — Producers and tasks: name Producer 1, Producer 2, Task A, Task B, time horizon.
Step 2 — Productivity: estimate value-per-hour (or units/time) for each producer at each task.
Step 3 — Opportunity-cost ratios: Producer 1's OC of Task A = Task B output forgone per unit of Task A. Repeat for Producer 2. Lower OC = comparative advantage in that task.
When to use it
- 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.'
When not to use it
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).
Worked example
The AI-Chip Supply Chain — ASML, TSMC, Nvidia (2024–2026)
By the mid-2020s the most valuable products on earth — the accelerators that train frontier AI — were built by a supply chain that no single company controls. ASML in the Netherlands makes the extreme-ultraviolet (EUV) lithography machines; TSMC in Taiwan operates the leading-edge fabs that turn designs into silicon; Nvidia in California designs the GPUs and owns the CUDA software stack. Each is dominant in its own layer and buys, rather than builds, the others. Recurring political pressure to "re-shore the whole stack" is…
Install this skill (free, MIT)
npx skills add deciqAI/knowledge-skillsUseful? Star the repo — stars help other builders find it.
FAQ
What's the difference between comparative and absolute advantage?
Absolute advantage means being better at a task; comparative advantage means having a lower opportunity cost for it. Ricardo's insight is that trade pays even when one party is better at everything — because specializing where each side gives up least makes both better off.
How does comparative advantage apply to delegation?
A founder who is the best salesperson, recruiter, and engineer in the company still shouldn't do all three. Every hour on a delegable task is bought at the price of the task only the founder can do. Delegate by opportunity cost, not by who's currently best.
When does the logic of comparative advantage break down?
When the task is a skill you must keep to maintain judgment (understanding customers), when transaction costs of delegating exceed the gains, or when quality below a threshold is fatal. Comparative advantage optimizes steady-state allocation; it doesn't excuse never learning what you delegate.
Related mental models
A death spiral is a self-reinforcing negative feedback loop in competitive markets.
Core competence (Prahalad & Hamel, 1990) becomes dynamic when you recognize that competences decay, markets change what they reward, and building sequence matters.
Average cost per unit falls as output rises — fixed costs spread thinner, specialization deepens, and learning compounds.
Emergence: many interacting parts produce whole-level properties that cannot be predicted from the parts alone.