无论磁盘技术给我们的软件设计留下了什么样的标志，这么做主要是为了实现上的意图，而不是为了服务用户或者任何目标导向的设计原理。
Wherever disk technology has left its mark on the design of our software, it has done so for implementation purposes only, and not in the service of users or any goal-directed design rationale.
新的习惯用法（以及旧习惯用法的新使用）会引起风险，这就是为什么认真且目标导向的设计，以及在真实工作条件下进行真实用户的正确测试那么重要的原因。
New idioms (as well as new uses for old idioms) pose a risk, which is why careful, Goal-Directed Design and appropriate testing with real users in real working conditions are so important.
使用一个网站不同的动机应该采用不同的设计以方便流 新用户往往以比较娱乐的方式看待网络 而有经验的用户往往比较现实.这导致了目标导向和经验性使用的差别.流经常发生在目标导向过程中 因为有更高的挑战存在.
This leads to a distinction between experiential and goal-directed use. Flow tends to occur more often during goal-directed use, because of the higher challenge involved.
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