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Commoncog helps business leaders and investors make better decisions in uncertain times, by expanding the set of business scenarios that they recognise in their heads.
We research and publish business cases that help you do better, organised according to business concepts, using a theory of accelerated expertise that’s proven to work.
"Commoncog will teach you more than any generic business strategy executive education course."
Vassilis Tziokas – Global Lead, Microsoft
"Your prolific and thought-provoking writing has had a major influence on the way I think about business and career. "
Jonathan Horowitz – Senior Manager, Home Depot
"Among the most on point and relevant business material I have come across in my career. "
Josh Rosen – MP, Bengal Capital
Commoncog’s Calibration Case Method helps you build the skill of business pattern-matching better, faster. Learn how experts in business and investing master their fields, and copy their method for yourself.
Watch a 13 minute video introduction →↓
One lesson a day, for seven days. No spam. Learn the principles of the Calibration Case Method, to use it in your life.
is an evergreen collection of cases arranged into Concept Series — and home to the Calibration Case Method.
A soup-to-nuts, practitioner-oriented journey through the game of business. We test business ideas so you don’t have to.
Check out the Business Syllabus →
Notes on Commoncog’s 2025 repositioning, and taking a month off.
A simple, universal rule for AI use, built on top of some smart philosophy, designed to be used as guiding policy for your business.
If you want to get rich, the irony is that small markets are often better than large ones.
What do we actually know about burnout? What does the research say? Is burnout preventable? All the research, in one free, updated place.
The bare minimum you need to know to be an adequate manager. Short enough to finish in three hours. Meaty enough to take 6-8 months to master.
The soup-to-nuts guide to building a career moat. We start from understanding your job market, executing a skills audit, all the way to building and then maintaining a moat.
is a private, members-only community for sensemaking on business and markets, and includes discussions like ....
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