• Diversify your information sources.
  • Increase confidence
  • Enhance decision-making.


Triangulation is the process of gathering and validating information from two or more sources. It’s also called cross-examination.

Humility and triangulation of great people is an excellent way of raising one's probability of making a good decision. — Ray Dalio

The idea is that you feel more confident in a decision when the same results are validated or invalidated from different sources of information. Triangulation increases your probability of making a good decision by increasing your perspective, credibility and validity of the results. It also helps you eliminate bias by not relying on one method.

How do I use triangulation? There are four basic types of triangulation.

  1. Data triangulation: Use different sources of information to increase validity of information. Examples: interviews, articles, documents, reports, photographs and observations. Complement interviews with articles and statistics with photos.
  2. Investigator triangulation: Use multiple researchers when gathering information. The different backgrounds and personalities gives you different questions, observations and a broader understanding.
  3. Theory triangulation: Use alternate theories against the same set of information. This avoids the risk of researchers coming to a conclusion based on their own pet views of the information. You basically want people to argue over a set of information from different theories.
  4. Methodological triangulation: Use multiple qualitative and/or quantitative methods to gather the information. Examples: surveys, focus groups, interviews, observations.



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