让修改的结果直接可见,可以减轻使用者在脑中推演的负担
前两例谈编程,第三例谈制谱界面;反馈能帮助观察,但不能保证用户理解背后的概念。
沿同一来源继续阅读
对照原文
if you make a change or you make a decision you need to see the effect of that immediatelySo I could literally watch the
data flow through my program....by making the arrow a subtle shade of blue? Do you know how hard that is to see?