Perimeter Listening / Business

The Knowledge Project

The Knowledge Project studies how people think, learn and make consequential decisions. Shane Parrish’s conversations range across investing, business leadership, performance and broader questions of life, with additional narrative and solo episodes in the feed. For a finance-oriented listener, its value lies in examining judgment and behavior rather than tracking market prices. The organized archive makes it possible to follow a theme and compare the methods of different guests.

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Meet the hosts

Listen for

Decision-makingMental modelsLeadershipInvestor behavior

The show

Interviews about judgment and leadership · Farnam Street

The Desk’s listening note

Keep a short decision journal alongside the show and test one mental model against a real choice before collecting more frameworks.

Who it’s for

Investors and business readers who want to improve their judgment, understand recurring decision errors and learn from the working methods of experienced practitioners.

A useful place to start

Start with Shane Parrish’s short Clear Thinking episode, then use the archive’s theme index to choose an interview about decision-making or investing.

From connected public feeds

Latest collected episodes

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The people behind the microphone

Meet the host.

All host profiles

Founder, Farnam Street; author and podcast host

Shane Parrish

Shane Parrish founded Farnam Street and hosts The Knowledge Project. He writes about decision-making and mental models, authored Clear Thinking, and co-created The Great Mental Models book series. He also started the investment company Syrus Partners. His interviews examine how experienced people think and work, connecting business leadership and investing with habits that support clearer judgment in everyday situations.

Host profile Official profile

Sources & further reading

Profile checked September 18, 2026. Editorial notes are Perimeter’s interpretation.