“ Walking on water and developing software from a specification are easy if both are frozen. ”
“Reworking defects in requirements, design, and code consumes 40-50% of the total cost of software development.”
“60% of all defects usually exist at design time.”
Software Testing IS costlier than we suppose
RTI study revealed that software bugs cost U.S. economy $59.6 billion every year.
Extended labour was deployed to develop already working program, but it was not enough mature to put into live environment.
“ 50% of staff is generally spent solely on testing and debugging activities.”