Quote

Testing shows the presence, not the absence of bugs.

Edsger Dijkstra

Change background

T
T
T

Change font

TAGS & TOPICS

Edsger Dijkstra
Age: 72 †
Born: 1930
Born: May 11
Died: 2002
Died: August 5
Computer Scientist
Engineer
Mathematician
Physicist
Scientist
University Teacher
R'dam
Edsger Dijkstra
Edsger Wybe Dijkstra
Dijkstra
EWD
E.W. Dijkstra
Shows
Bugs
Testing
Programming
Absence
Presence

More quotes by Edsger Dijkstra

Image
If debugging is the process of removing software bugs, then programming must be the process of putting them in.
Edsger Dijkstra
Image
We shall do a much better programming job, provided that we approach the task with a full appreciation of its tremendous difficulty, provided that we stick to modest and elegant programming languages, provided that we respect the intrinsic limitations of the human mind and approach the task as Very Humble Programmers.
Edsger Dijkstra
Image
... as a slow-witted human being I have a very small head and I had better learn to live with it and to respect my limitations and give them full credit, rather than to try to ignore them, for the latter vain effort will be punished by failure.
Edsger Dijkstra
Image
Computer science is no more about computers than astronomy is about telescopes, biology is about microscopes or chemistry is about beakers and test tubes. Science is not about tools. It is about how we use them, and what we find out when we do.
Edsger Dijkstra
Image
The effort of using machines to mimic the human mind has always struck me as rather silly. I would rather use them to mimic something better.
Edsger Dijkstra
Image
There is very little point in trying to urge the world to mend its ways as long as that world is still convinced that its ways are perfectly adequate.
Edsger Dijkstra
Image
Object-oriented programming is an exceptionally bad idea which could only have originated in California.
Edsger Dijkstra
Image
PL/1, the fatal disease, belongs more to the problem set than to the solution set.
Edsger Dijkstra
Image
Simplicity is prerequisite for reliability.
Edsger Dijkstra
Image
We must be very careful when we give advice to younger people sometimes they follow it!
Edsger Dijkstra
Image
FORTRAN, the infantile disorder, by now nearly 20 years old, is hopelessly inadequate for whatever computer application you have in mind today: it is now too clumsy, too risky, and too expensive to use.
Edsger Dijkstra
Image
Probably I am very naive, but I also think I prefer to remain so, at least for the time being and perhaps for the rest of my life.
Edsger Dijkstra
Image
The prisoner falls in love with his chains.
Edsger Dijkstra
Image
Elegance is not a dispensable luxury but a factor that decides between success and failure.
Edsger Dijkstra
Image
I think of the company advertising Thought Processors or the college pretending that learning BASIC suffices or at least helps, whereas the teaching of BASIC should be rated as a criminal offence: it mutilates the mind beyond recovery.
Edsger Dijkstra
Image
In their capacity as a tool, computers will be but a ripple on the surface of our culture. In their capacity as intellectual challenge, they are without precedent in the cultural history of mankind.
Edsger Dijkstra
Image
Besides a mathematical inclination, an exceptionally good mastery of one's native tongue is the most vital asset of a competent programmer.
Edsger Dijkstra
Image
Mentally mutilated potential programmers beyond hope of regeneration.
Edsger Dijkstra
Image
When we had no computers, we had no programming problem either. When we had a few computers, we had a mild programming problem. Confronted with machines a million times as powerful, we are faced with a gigantic programming problem.
Edsger Dijkstra
Image
Computer science is no more about computers than astronomy is about telescopes.
Edsger Dijkstra