Ray Dalio

Who

Ray Dalio founded Bridgewater Associates from his apartment in 1975 and built it into one of the largest hedge funds in the world. He is also known for publishing his management and life rules in Principles (2017), and for his long-running work on economic and debt cycles.

Operating rules

Learn from the big mistake. In the early 1980s he publicly predicted an economic crash that didn’t come, lost almost everything, and had to let his staff go. He has described that loss as the moment he learned to assume he might be wrong, and to look for people who would challenge him.

Turn judgment into a system. Dalio writes his decision criteria down and, where possible, turns them into rules a computer can test against history. Decisions become something you can inspect and improve, not just remember.

Believability over hierarchy. In his firm, the weight of an opinion is meant to depend on the person’s track record and reasoning, not their title.

Understand the machine. His economic work treats the economy as a machine with recurring cycles. The same habit shows up everywhere: understand how the thing works before deciding what to do with it.

What I borrowed

The decision log. For important choices I write a short note before the outcome: what I decided, why, and what I expect. It is the single most useful habit I have taken from anyone.

What I won’t copy

The full intensity of radical transparency. In most teams I’ve worked with, the same honesty lands better when it is direct in private and careful in public.