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Engraved plate of early rotary steam engines from the Edinburgh Encyclopaedia, the machine reduced to principles

Rotary engines, Edinburgh Encyclopaedia, 1832. via Wikimedia Commons, public domain

Simon & Schuster

Principles

Life and work, as rules.

$35.00

Available · worldwide delivery

Author
Ray Dalio
Publisher
Simon & Schuster
Published
January 2017
Pages
0
Format
Hardcover
Size
Standard
Language
English

The Library Essay

An Investor Shows His Working

Ray Dalio founded Bridgewater Associates from his apartment in 1975 and built it into the largest hedge fund in the world, and his explanation for that outcome is the subject of this book: not brilliance but written rules, several hundred of them, refined over decades and applied to everything from hiring to market analysis. Errors, in his system, exist to be recorded, diagnosed and converted into principles, so the firm compounds judgement the way portfolios compound money.

Published in 2017, Principles became an immediate bestseller and made Bridgewater's internal culture of radical transparency, with its taped meetings and public disagreement, a subject of general fascination. Readers need not adopt the whole apparatus; the book's durable claim is narrower, that an examined process beats an unexamined talent.

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