Bugs are already costly, and fixing them takes time when they are part of a new feature. When it’s a regression, that’s worse than releasing a new feature with bugs—it’s a step backward. Missing a shot in basketball is a bug. Scoring a goal on your own hoop, effectively scoring for your opponent, is a regression. Time is the most critical resource in software development, and losing time has the most severe penalty. Regressions lose the most time. It makes sense to avoid regressions and avoid breaking the code.
