Absence Quote by Edsger Dijkstra

Testing shows the presence, not the absence of bugs.

— Edsger Dijkstra

If the objective of testing were to prove that a program is free of bugs, then not only would testing be practically impossible, but…

— Boris Beizer

“Dijkstra once said, “Testing shows the presence, not the absence, of bugs.” In other words, a program can be proven incorrect by a test,…

— Robert C. Martin

“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…

— Gerald M. Weinberg

I'm not saying we purposely introduced bugs or anything, but this is kind of a natural result of any complexities of software... that you…

— Will Wright

A test that reveals a bug has succeeded, not failed.

— Boris Beizer

Running the test suite like this allows us to catch problems when they are just introduced.

— Miguel de Icaza

A design remedy that prevents bugs is always preferable to a test method that discovers them.

— Boris Beizer

My software never has bugs. It just develops random features.

— Anonymous

“My programs don't have bugs... they have random features.”

— Sean Keogh

“we just don't have the time to go chasing after bugs that the automated tests could have found for us. We have to spend…

— Andrew Hunt

If you want more effective programmers, you will discover that they should not waste their time debugging, they should not introduce the bugs to…

— Edsger Dijkstra