Programming Quote by Robert C. Martin
““Dijkstra once said, “Testing shows the presence, not the absence, of bugs.” In other words, a program can be proven incorrect by a test, but it cannot be proven correct. All that tests can do, after sufficient testing effort, is allow us to deem a program to be correct enough for our purposes.””
About This Quote
Source Book: Clean Code, 2008
Testing can show bugs exist but cannot prove a program is correct; it only gives confidence.
In simple terms: Tests reveal flaws, not perfection.
Key Takeaway
Use testing to gain confidence, not certainty.
Themes
software testing
quality assurance
program correctness
limitations
confidence
Mood
analytical
practical
Type
technical
philosophical
When to use this quote
- software development
- continuous integration
- code review
- deployment
Key Concepts
bug detection
test coverage
risk assessment
Questions to Reflect On
- How many tests are enough?
- What other methods complement testing?
A Different Perspective
Testing cannot guarantee absence of bugs.
