The cost of adding a feature isn't just the time it takes to code it. The cost also includes the addition of an obstacle to future expansion. The trick is to pick the features that don't fight each other.
添加功能的成本不仅仅是编写代码所花费的时间。成本还包括未来扩张的障碍。诀窍是选择那些互不冲突的特性。
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Trick
Expansion
Programming
Addition
Time