2. 连结系统与真实世界(Match between system and the real world)
The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.
Users often choose system functions by mistake and will need a clearly marked “emergency exit” to leave the unwanted state without having to go through an extended dialogue. Support undo and redo.
Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.
Minimize the user's memory load by making objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another. Instructions for use of the system should be visible or easily retrievable whenever appropriate.
Open Table(餐厅订位APP)显示我之前搜寻过的餐厅,让使用者不用再绞尽脑汁想之前搜过什么。
7.提供使用时的自由度和效率(Flexibility and efficiency of use)
Accelerators — unseen by the novice user — may often speed up the interaction for the expert user such that the system can cater to both inexperienced and experienced users. Allow users to tailor frequent actions.
Dialogues should not contain information which is irrelevant or rarely needed. Every extra unit of information in a dialogue competes with the relevant units of information and diminishes their relative visibility.
资讯呈现不应该包括不相关或少用的资讯。对话框里任何多余的资讯都会让重要的资讯的视觉明显度下降。
Uber是个很好的例子,在产品中最重要的就是使用者要去哪里,任何其他的资讯都被藏在下一层。
9. 帮助使用者去了解、侦错和恢复错误(Help users recognize, diagnose, and recover from errors)
Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively suggest a solution.
Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large.