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

Boris Beizer

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Boris Beizer
Age: 84 †
Born: 1934
Born: January 1
Died: 2018
Died: October 7
Author
Engineer
Objective
Objectives
Program
Prove
Impossible
Theoretically
Free
Bugs
Also
Practically
Would
Testing

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One of the saddest sights to me has always been a human at a keyboard doing something by hand that could be automated. It's sad but hilarious.
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Extra features were once considered desirable. We now recognize that 'free' features are rarely free. Any increase in generality that does not contribute to reliability, modularity, maintainability, and robustness should be suspected.
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First law: The pesticide paradox. Every method you use to prevent or find bugs leaves a residue of subtler bugs against which those methods are ineffective.
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A test that reveals a bug has succeeded, not failed.
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A good threat is worth a thousand tests.
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In programming, it’s often the buts in the specification that kill you.
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If you can't test it, don't build it. If you don't test it, rip it out.
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Bugs lurk in corners and congregate at boundaries.
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Testing proves a programmer’s failure. Debugging is the programmer’s vindication.
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Software never was perfect and won't get perfect. But is that a license to create garbage? The missing ingredient is our reluctance to quantify quality.
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