The pseudo-graph plots delivered fu

The pseudo-graph plots delivered functionality (cumulative) versus time for two imaginary stereotypical projects: one with good design and one with no design. The project that does no design expends no effort on design activities, whether they be up front design or agile techniques. Because there's no effort spent on these activities this project produces function faster initially.

The problem with no-design, is that by not putting effort into the design, the code base deteriorates and becomes harder to modify, which lowers the productivity, which is the gradient of the line. Good design keeps its productivity more constant so at some point (the design payoff line) it overtakes the cumulative functionality of the no-design project and will continue to do better.

結果 (英文) 3:

伪图交付的功能（累计）与想象中的两个常规项目时间：一个好的设计，没有设计。那没有设计费任何努力设计活动项目，无论是前期设计或敏捷技术。由于在这些活动上没有努力，这个项目产生的功能更快的开始。没有设计的问题，是通过不把精力投入到设计中，代码库恶化，变得难以修改，从而降低了生产力，这是线的梯度。好的设计使其生产力不断在一些点（设计盈利线）它超越的没有设计项目累计功能和将继续做的更好。