The document discusses excise, which refers to taxes imposed on the production or sale of certain goods. It contrasts excise with needs and goals, and mentions implementation and mental models centered around goals rather than needs. Examples of excise include keynote inspector, Purdue library, Google Calendar, and ornamental graphics. The document also provides some dos and don'ts for user experience, such as placing the mouse cursor in the first input box, separating input from output, requiring passwords, making users remember settings, and making users confirm actions. It concludes that it is easy to make things hard but hard to make things easy.

1. Eliminating Excise

2. What is EXCISE?
?

3. vs.
needs goals

5. vs.
needs goals
i m p le me n t at i o n me n t a l
mo de l mo de l

6. - centered
goal - directed

7. EXCISE examples
? Keynote inspector
Purdue library
Google
Calendar
Graphics - ornamental?

8. Do’s & Don’ts
Double-click to edit

9. some Do’s & Don’ts
Place mouse cursor in first input box on
forms
Don’t separate input from output
Don’t require passwords
Don’t make users remember or re-enter
personal settings
Don’t make users confirm actions

10. It’s easy to make things hard.
!
It’s hard to make things easy.