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Personal Productivity in the Age of AI

Module 4 — Codifying Expertise as Skills

Lesson 15: Writing Your First Skill — Codify Before You Build

Last updated: 2026-05-12

A skill is a small file that turns a decomposed routine into a single command. The rule that matters is not how to write the file. It is that the worker writes down what good looks like, in their own judgement, before the skill is built.

Lesson 15: Writing Your First Skill — Codify Before You Build

Blackboard

Codify the judgement; the file is easy

13 min
Pause and Think

Think of one piece of work you do well that a junior colleague would struggle with. What do you actually know that they do not?

Practice Question

Question

Does not count for certificate
Choose one answer, use the hint if needed, then check your answer.
Use the hint before checking if you need a nudge.