Second law: The complexity barrier. Software complexity (and therefore that of bugs) grows to the limits of our ability to manage that complexity.

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.

Second law: The complexity barrier. Software complexity (and therefore that of bugs) grows to the limits of our ability to manage that complexity.

More than the act of testing, the act of designing tests is one of the best bug preventers known.

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

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

If you can't test it, don't build it. If you don't test it, rip it out.