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Shane Parrish

Founder of Farnam Street; author of Clear Thinking and The Great Mental Models

Shane Parrish at a glance

Known for
Founder of Farnam Street · Author of Clear Thinking · The Great Mental Models series · Host of The Knowledge Project
Nationality
Canadian
Working on
Running Farnam Street, The Knowledge Project and Syrus Partners
Active products
Farnam Street, Brain Food and FS Membership

Facts checked 2026-10-29

About Shane Parrish

Shane Parrish is a Canadian writer, podcaster and entrepreneur best known as the founder of Farnam Street (fs.blog), a website and newsletter about decision-making and mental models, and as the author of the bestselling book Clear Thinking. He turned a personal blog into a one-person-led media business funded by readers, members and books rather than advertising-driven content.

Parrish worked for years at the Communications Security Establishment, Canada's signals intelligence agency, as a cybersecurity specialist, starting in August 2001. While doing an MBA he started a blog named after Farnam Street in Omaha, home of Berkshire Hathaway's office, as a tribute to Warren Buffett and Charlie Munger. He used it to summarise what he was learning from books, and noticed that a large share of his readers worked on Wall Street. A 2018 New York Times profile described how hedge fund managers and executives had become devoted readers; by then he had left the intelligence agency to run Farnam Street full-time.

Farnam Street makes money in several ways. Brain Food, the free weekly newsletter, had 190,000 subscribers in 2018 and now says it is read by more than 900,000 people. A paid FS Membership offers early and bonus podcast episodes and member-only material; in 2018 it cost $250 a year. The Knowledge Project, his interview podcast, is one of the most popular business podcasts. Farnam Street also co-created The Great Mental Models, a four-volume book series covering general thinking concepts, physics, chemistry and biology, systems and mathematics, and economics and art. His own book, Clear Thinking: Turning Ordinary Moments into Extraordinary Results, came out in 2023 and became an instant New York Times bestseller.

Parrish also started Syrus Partners, an investment company that buys and holds businesses. He lives in Ottawa, Ontario, and still writes the Sunday newsletter and hosts the podcast.

He matters to the creator economy as an early example of a curator-turned-publisher: someone who built a large, loyal audience by explaining other people's best ideas, then sold memberships and books on top of it.

Products by Shane Parrish

Website on decision-making, mental models and learning, with articles, book notes and a reader-funded membership.

Brain Food logo

Brain Food

fs.blog

Free weekly newsletter of ideas and insights, read by more than 900,000 people.

Paid membership with early podcast access, bonus episodes and member-only content.

Interview podcast with investors, founders and thinkers on how they make decisions.

Four-volume book series on mental models from thinking, science, systems, mathematics, economics and art.

Videos with Shane Parrish

Interviews & press

Shane Parrish's journey5 milestones · self-reported
  • Launch / milestone
  1. 2001Launch: Started at Canada's Communications Security Establishment in…
  2. 2017Milestone: Left the intelligence agency to run Farnam Street full-time
  3. 2018Milestone: Profiled by the New York Times
  4. 2023Launch: Published Clear Thinking, which became an instant New York…
  5. 2026Milestone: Brain Food is read by more than 900,000 people and The Great…

Timeline

  1. 2001 — Started at Canada's Communications Security Establishment in August as a cybersecurity specialist.
  2. 2017 — Left the intelligence agency to run Farnam Street full-time.
  3. 2018 — Profiled by the New York Times; Brain Food had 190,000 subscribers and membership cost $250 a year.
  4. 2023 — Published Clear Thinking, which became an instant New York Times bestseller.
  5. 2026 — Brain Food is read by more than 900,000 people and The Great Mental Models runs to four volumes.

How Shane builds

  • Master the best of what other people have already figured out.
  • Build a latticework of mental models from many disciplines.
  • Good decisions come from controlling your defaults, not from intelligence alone.
  • Earn trust by never selling editorial influence to sponsors.

Learn from Shane Parrish

Shane Parrish FAQ

Who is Shane Parrish?

blog), a website and newsletter about decision-making and mental models, and as the author of the bestselling book Clear Thinking. He turned a personal blog into a one-person-led media business funded by readers, members and books rather than advertising-driven content.

Who runs Farnam Street?

Farnam Street (fs.blog) was founded and is run by Shane Parrish, a former cybersecurity specialist at Canada's Communications Security Establishment.

Why is it called Farnam Street?

The blog is named after Farnam Street in Omaha, where Berkshire Hathaway has its office, as a tribute to Warren Buffett and Charlie Munger.

Was Shane Parrish a spy?

He worked for years at the Communications Security Establishment, Canada's signals intelligence agency, as a cybersecurity expert, starting in 2001. He has said he cannot talk about the details of that work.

How does Farnam Street make money?

Farnam Street earns from its paid FS Membership, its books such as The Great Mental Models and Clear Thinking, Amazon affiliate links, and sponsorships of the newsletter and podcast. It says sponsors get no editorial control.

How many people read Brain Food?

Farnam Street says its weekly Brain Food newsletter is read by more than 900,000 people. It had about 190,000 subscribers in 2018.

What is Shane Parrish known for?

Shane Parrish is best known for Farnam Street, Brain Food and FS Membership, out of 5 products listed on IndieMakerList.

Where is Shane Parrish from?

Shane Parrish is a Canadian indie maker, now based in Ottawa, Canada.

Where is Shane Parrish based?

Shane Parrish is based in Ottawa, Canada.

What is Shane Parrish doing now?

As of October 2026, Shane Parrish's active products include Farnam Street, Brain Food, FS Membership and The Knowledge Project.

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