Black and white portrait of Ray Dalio: Narrator and Creator of Life Principles

Principles are ways of successfully dealing with reality to get what you want out of life.

Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.

Work Principle

Use "double-do" rather than "double-check" to make sure mission-critical tasks are done correctly.

Double-checking has a much higher rate of errors than double-doing, which is having two different people do the same task so that they produce two independent answers. This not only ensures better answers but will allow you to see the differences in people's performance and abilities. I use double-do's in critical areas such as finance, where large amounts of money are at risk.

And because an audit is only as effective as the auditor is knowledgeable, remember that a good double-check can only be done by someone capable of double-doing. If the person double-checking the work isn't capable of doing the work himself, how could he possibly evaluate it accurately?

Work Principle

Find a Meaningful Principle for You

Learn to get more of what you want out of life.

Life Principles

Work Principles

Please review our
Privacy Policy and Terms of Service
, which will go into effect on
. By continuing to use this site or our products or services, you agree to our
Terms of Service and acknowledge that you have read our Privacy Policy.