Updates

  1. Person pages list letters, writing, profiles and links as sortable tables with filters, and show each person's companies as links; Fund letters show each letter's description in its own column.
  2. Experts show a checked job title and a short description of each person; 30 more people have photographs.
  3. Every company, fund, university and publication the experts work for has a page listing the people there.
  4. Fund letters show each letter's thesis and filter by it; 225 person pages list the essays, columns and newsletter issues the person wrote.
  5. Person pages list every essay and newsletter issue a person wrote, and their own books as a table in List view.
  6. Recommends shows the five largest kinds of book and the rest under More; browse pictures load sooner.
  7. Podcasts and talks link the original episode, filter by Audio and video or Press, and list each publisher once.
  8. Pages are wider, Recommends has List and Grid, and a filter clicked again turns off.
  9. Book cards sit in a ruled grid with Open Library and Goodreads links and each book's one-line note.
  10. Funds is now Investors; each investor's styles are buttons that filter the table.
  11. Podcasts and talks on a person's page filter by year and publisher and show as a list or a grid of pictures.
  12. Quotes show only people's own words: 472 summaries written by list sites are gone.
  13. Country pages open from Browse again, and every link on the shelf lands on a page.
  14. Subject and person pages show their sections as tabs, and each book appears once on a person's page.
  15. Book cards show the quote, who said it and the source; grids show five cards to a row.
  16. On a phone, a menu holds the sections, search, Updates, Feedback and dark mode.
  17. Feedback takes a screenshot of the page with no browser prompt, opens a screenshot full size when you click it, and clears itself once sent.
  18. Book cards are centred, search names the topic each book sits in, and any text cut short shows whole on hover.
  19. Search groups its results by kind: people, companies, geographies, subjects, topics, books, funds, fund letters and papers.
  20. The Books table lists who recommended each book by name, and the browser tab names the section you are in.
  21. Feedback can take a screenshot of the page, or one you paste or choose, and opens in the corner beside Updates.
  22. Each rail button reopens its section where you left it, and Browse, Table and People show on every book and subject page.
  23. Filters grey out choices that hold nothing instead of hiding them, and Books › People filters by authors or recommenders.
  24. Feedback takes a subject line and up to three screenshots.
  25. Biographies are grouped by the person they are about: 41 new pages, from Abraham Lincoln to Lee Kuan Yew.
  26. Sport splits into 23 sports, and Religion into one topic per faith.
  27. Book lists show as cards: the cover, one recommendation quote and every recommender by name.
  28. Seventeen subjects that had two or three pages under different names now have one page each.
  29. Every page lists its Experts as authors and recommenders, with a link to them on the Experts tab.
  30. Economics, Financial history, Financial panics and Accounting are subjects of their own, with one page per financial crisis.
  31. Book, person and subject pages open inside the app, so the tabs stay in view.
  32. 996 more book covers, and photographs or logos for 227 more people and companies.
  33. Books › Browse shows every subject as cards, and the rail holds Fund letters, Papers, Experts, Books and Funds.
  34. Every topic over 150 books splits into narrower topics, each with a page of its own.

Send feedback

What is it?
Screenshots, up to 3 (optional)
or paste one with Ctrl+V

We use your email only to reply to you.

Law of Large Numbers

Mental models

Sample averages converge on the true mean only as samples grow, and small samples produce extreme results far more often than intuition allows. Most investment track records, medical trials and A/B tests are small samples wearing the costume of evidence. The practical rule is to ask how many independent observations sit behind any number before believing it.

Books 5Experts 1Recommenders 18Resources 3

Start here

  1. How to Lie with StatisticsDarrell Huff, 1954
  2. The Drunkard's WalkLeonard Mlodinow, 2008
  3. Against the GodsPeter L. Bernstein, 1996
How to Lie with StatisticsHow to Lie with Statistics
T1 How to Lie with Statistics
Darrell Huff · 1954
Open LibraryGoodreads

How biased samples, chosen averages and cut-off chart axes make numbers mislead.

Recommended by: Bill Gates, Mohnish Pabrai, Morgan Housel and 6 others

Against the GodsAgainst the Gods
T1 Against the Gods
Peter L. Bernstein · 1996
Open LibraryGoodreads

How people learned to measure risk, from early probability to portfolio theory.

“I think some of the books that are a must would be Peter Bernstein's book about risk, Against the Gods: The Remarkable Story of Risk.” — Charles de Vaulx

Source: De Vaulx naming Bernstein's book a must-read on risk

Recommended by: Charles de Vaulx, Jim Collins and 8 others

The Drunkard's WalkThe Drunkard's Walk
T2 The Drunkard's Walk
Leonard Mlodinow · 2008
Open LibraryGoodreads

How randomness shapes our lives, the history of probability, and why we misread it.

Recommended by: Patrick Collison

Naked StatisticsNaked Statistics
T2 Naked Statistics
Charles Wheelan · 2013
Open LibraryGoodreads

Statistics without the maths, for reading claims: averages, correlation, regression.

Recommended by: Keith Rabois

The Improbability PrincipleThe Improbability Principle
T3 The Improbability Principle
David J. Hand · 2014
Open LibraryGoodreads

Recommended by: Mohnish Pabrai

More mental models

← Kelly CriterionLoss Aversion and Prospect Theory →All mental models