Mental Models for Product Managers

Jobs to Be Done

Clayton Christensen

People hire products to accomplish specific functional, emotional, and social jobs.

First Principles Thinking

Aristotle / Elon Musk

Strip a problem to its fundamental truths and reason up from there — the antidote to reasoning by analogy.

Second-Order Thinking

Howard Marks

Think past the immediate effect to the second and third-order consequences.

Inversion

Carl Jacobi / Charlie Munger

Think backwards: instead of asking how to succeed, ask what guarantees failure — then avoid it.

Activation Energy

Reactions do not start the instant ingredients touch. They need a minimum energy input — activation energy — to overcome the barrier between initial and final state. In chemistry,...

Feedback Loops

Norbert Wiener / Jay Forrester

Outputs feed back as inputs, creating either amplifying or stabilizing dynamics.

Opportunity Cost

Frédéric Bastiat

The true cost of any decision is what you gave up to get it.

Circle of Competence

Buffett & Munger

You have an edge in some domains and not others — and the boundary between the two is where most catastrophic decisions happen. Knowing where your knowledge actually ends, not where your confidence ends, is the single most protective mental model.

Map vs Territory

Alfred Korzybski

Models are not reality; confusing the two leads to systematic errors.

Confirmation Bias

We seek evidence that confirms what we already believe and filter out what contradicts it.

Availability Cascade

Timur Kuran / Cass Sunstein

In 1999, Timur Kuran and Cass Sunstein published a paper that explains half of what goes wrong in public discourse: "Availability Cascades and Risk Regulation." The concept is a...

Sunk Cost Fallacy

Alfred Marshall

Past investments should not drive future decisions.

Goodhart's Law

Charles Goodhart

When a measure becomes a target, it ceases to be a good measure.

Skin in the Game

Nassim Nicholas Taleb

Decision-makers must bear consequences to align incentives.

Narrative Fallacy

Nassim Nicholas Taleb

We compress complex reality into clean stories, mistaking explanation for prediction.

Regression to the Mean

Francis Galton

Extreme outcomes are followed by more moderate ones as luck fades.

OODA Loop

John Boyd

Cycle through observe-orient-decide-act faster than competitors.

Eisenhower Decision Matrix

Dwight D. Eisenhower

Sort tasks by urgency and importance to focus on what truly matters.

Pre-Mortem Analysis

Gary Klein

A pre-mortem is a decision exercise: assume the project or decision has already failed, then work backward to list why. The team imagines it is twelve months later and the launch...