The Rule Of Three — Tentamen Software Testing Blog

The Rule Of Three Testflix


The Rule Of Three is an eight-minute offline talk that I presented at this year’s Testflix event. In the post How To Prepare Eight Minute Video Talk, I described how the final video was created. In The Rule Of Three talk, I tried to answer the following questions:

  • What is the rule of three?
  • Why three, but not two, four, or five?
  • Does It work?
  • How often?
  • A lot of rule of threes?

Here are my original notes: Notes while preparing The Rule of Three.

Here is a presentation created based on those notes: The Rule Of Three Presentation.

And the final video:

Originally published at on December 25, 2020.




Founder of Tentamen, software testing agency.

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Karlo Smid

Karlo Smid

Founder of Tentamen, software testing agency.

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