这是《界面设计模式第二版》第一章节的一些笔记，很多可能取自现在已经非常有名的一些软件的经验，但是know why也是蛮重要的。

用户体验之需求分析之难：（这里强调是体验不是需求，因为需求比较清晰，但用户体验很微妙更难）
1）用户未必善于把自己的体验需求表达到位。
2）当询问用户对于体验的需求的时候，对话中会相互适应而把最初的想法一点点走歪
3）有一些需求可能是一些用户过于独特的要求，而缺少共性，但是否真的如此需要设计人员的经验分析判断
4）有时候比起询问用户需求，更重要的是观察用户使用习惯

UI/UX设计原则

1. Safe Exploration
   例如： multi-level undo feature, working predictably, no unexcepted

2. Instant Gratification： success experience even hard later.
   avoid: slow-to-loading, ad and long sets of instructions

3. Satisficing: keep in mind that a complicated interface impose a language cognitive cost on new users.

4. Changes in Midstream:
   eg. builder-style applications

5. Deferred Choices:
   Use defaults, allow to skip questions before start up.
   (话说，日本的软件就是喜欢强迫客户填写一大堆资料，比如online的一些杂志，很烦人）

6. Incremental Construction
   flow and happiness

7. Habituation: find common user habituation across applications

8. Microbreaks:
   followed by fast read, fragment time

9. Spatial Memory: provide user-arranged area for storing documents and objects.

10. Prospective Memory: eg. window left on-screen, virtual sticky notes, browser bookmarks, email kept in inbox, browser bookmarks in online shops etc.

11. Streamlined Repetition: eg. macro functions

12. Keyboard Only: support users who only keyboard or prefer keyboard only

13. Other People’s Advice: comments and reviews for the products. Matlab holds public programing contests, users write the best Matlab code to solve difficult scientific problems.

14. Personal Recommendations: support person-to-person sharing of contents, like fb, twitter sharing etc.