How to debug Heisenbugs

18 Oct 2025

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A three-panel comic titled “The Art of Bugfixing” by Geek & Poke. In each panel, two cartoon programmers stand side by side facing a computer monitor. In the first two panels, they quietly look at the screen. In the third panel, one suddenly shouts, “DON’T LOOK AT THE SCREEN!!!!” The caption below reads, “How to debug Heisenbugs,” humorously referring to software bugs that disappear when observed.
Source: Geek and Poke

(Geek and Poke website was on Typepad which has now shut down)
Rosie Sherry
CEO & Founder at Ministry of Testing
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I've been working in the software testing and quality engineering space since the year 2000 whilst also combining it with my love for education and community. It turns out quality, community and education go nicely hand in hand.

🎓 MoT-STEC qualified

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