是否存在不值得产生的具体“技术债务”？

There are (at least) two ways that technical debts make their way into projects. The first is by conscious decision. Some problems just are not worth tackling up front, so they are consciously allowed to accumulate as technical debt. The second is by ignorance. The people working on the project don't know or don't realize that they are incurring a technical debt. This question deals with the second. Are there technical debts that you let into your project that would have been trivial to keep out ("If I had only known...") but once they were embedded in the project, they became dramatically more costly? There are (at least) two ways that technical de