Discipline Quote by Gerald M. Weinberg
““Testing may convincingly demonstrate the presence of bugs, but can never demonstrate their absence."- Edsger W. Dijkstra, Computing Pioneer (1930–2002), "Programming as a discipline of mathematical nature," Am. Math. Monthly, 81 (1974), No. 6, pp. 608–12.””
About This Quote
Source Article: “Programming as a discipline of mathematical nature,” Am. Math. Monthly, 1974
Testing can show bugs exist but cannot prove a program is bug‑free.
In simple terms: Tests find errors but can’t guarantee none.
Key Takeaway
Never assume testing alone ensures correctness.
Themes
software quality
testing
limitations
Mood
analytical
cautious
Type
technical
philosophical
When to use this quote
- software development
- critical systems
- regulatory compliance
- continuous integration
Key Concepts
verification
software reliability
confidence intervals
Questions to Reflect On
- What additional methods can complement testing?
- How do you assess risk of unseen bugs?
A Different Perspective
Testing cannot replace formal verification.
