# Lesson Note
## Lesson 1-3 What UXD is
>formal definition of UXD
<book:the element of user experience>
Usability是成功的使用者經驗中的其中一個屬性(attribute)
但若只單獨提及usability不會讓使用者對UX有正面的感受
>UXD is the sum of a simple equation(方程式)
business goals + user/customer goals + user experience + back end process
= user experience design
>UXD is the sum of these attributes
useful.desirable.accessible. credible.findable.usable. = VALUABLE
>UXD is the result of multiple activities
user testing
front-end development | writing/content
visual design | information architecture
user research | interaction design
>UXD means problem solving
如果在UX設計中找不到好的解決辦法,或許是一開始的問題定義錯誤
UXD就是為了設計問題來探索可行的解決辦法
>他能揭露使用者的需求和商業目標(或者是兩者交疊的領域)
>能確保產品達到或超出使用者的預期,以增加採用程度.使用度和忠誠度
>決定高品質的產品能夠被製造或實行的可行性(ㄑfeasibility)
>UXD ensures people use things
當人們使用一項物品因為
>我們能夠輕易理解如何達成我們的任務
>完成任務的步驟看起來不複雜甚至很簡單
>我們的認知和努力的感覺很輕微
>互動後提供即時的,清楚的回饋
>錯誤的潛在性極低：當人們犯錯時可以快速且簡單的回復原狀
>UXD is a balancing act
INNOVATION =
Desirability(渴望程度) +
Feasibility(製作可行性) +
viability(成長可行性:這個專案可能可以有好幾個不同的版本<類似產品彈性程度>)
## Lesson 1-4 What should we care about UXD?
>we want our needs to be met.
>we wany ourqueations to be answered
>treated with respect
*expectations are first formed visually
(視覺是第一印象)
*跨裝置
*從a到b的路徑應該既簡單又快速愉悅
## Understanding the elements of UXD