„The Code-and-Fix Model. The basic model used in the earliest days of software development contained two steps:
:1. Write some code.
:2. Fix the problems in the code.
Thus, the order of the steps was to do some coding first and to think about the requirements, design, test, and maintenance later. This model has three primary difficulties: (a) After a number of fixes, the code became so poorly structured that subsequent fixes were very expensive. This underscored the need for a design phase prior to coding. (b) Frequently, even well designed software was such a poor match to users' needs that it was either rejected outright or expensively redevelopment...“

—  Barry Boehm, p. 61-62
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Barry Boehm16
American software engineer 1935
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