1. William H. Bowers – whb108@psu.edu Eliminating Excise Cooper 10

2. William H. Bowers – whb108@psu.edu Topics Defining Excise Defining Excise GUI Excise GUI Excise Training Wheels Training Wheels Pure Excise Pure Excise

3. William H. Bowers – whb108@psu.edu Topics Visual Excise Visual Excise Stopping the Proceedings with Idiocy Stopping the Proceedings with Idiocy Protecting Us From Ourselves Protecting Us From Ourselves Common Excise Traps Common Excise Traps

4. William H. Bowers – whb108@psu.edu Defining Excise Large tasks are composed of small ones Large tasks are composed of small ones Excise tasks are necessary Excise tasks are necessary They are ancillary They are ancillary Do not contribute directly to reaching goals Do not contribute directly to reaching goals Uses effort unnecessarily Uses effort unnecessarily

5. William H. Bowers – whb108@psu.edu GUI Excise Window management Window management Manipulating windows and icons Manipulating windows and icons Overhead of screen management Overhead of screen management Command line excise Command line excise –Memorization required –Diminishes with experience

6. William H. Bowers – whb108@psu.edu Training Wheels Significant excise for first time or casual users Significant excise for first time or casual users Becomes more significant with use Becomes more significant with use Hinders advanced learning Hinders advanced learning Must be removable Must be removable

7. William H. Bowers – whb108@psu.edu Pure Excise Hardware management Hardware management Should be removed from UI Should be removed from UI Better to use more intelligent program Better to use more intelligent program

8. William H. Bowers – whb108@psu.edu Visual Excise Visual metaphors Visual metaphors Make it easier to understand relationships Make it easier to understand relationships Management is pure excise Management is pure excise Robs CPU time Robs CPU time Makes application sluggish Makes application sluggish

9. William H. Bowers – whb108@psu.edu Stopping the Proceedings with Idiocy Error messages Error messages –Unintelligible data –User can not fix most errors Unnecessary confirmation messages Unnecessary confirmation messages High excise High excise Should be eliminated Should be eliminated Asking permission Asking permission

10. William H. Bowers – whb108@psu.edu Protecting Us From Ourselves Passwords Passwords –Not always appropriate –Users should be allowed to turn off Multiple confirmation messages Multiple confirmation messages

11. William H. Bowers – whb108@psu.edu Common Excise Traps Forcing the user to go to another window Forcing the user to go to another window Forcing the user to know or remember file locations Forcing the user to know or remember file locations Making the user resize, move windows Making the user resize, move windows Forcing re-entry of preferences Forcing re-entry of preferences

12. William H. Bowers – whb108@psu.edu Common Excise Traps Don’t force the user to enter every detail at once Don’t force the user to enter every detail at once Don’t force the user to ask permission Don’t force the user to ask permission Don’t ask for unnecessary confirmation Don’t ask for unnecessary confirmation Avoid and prevent errors Avoid and prevent errors

13. William H. Bowers – whb108@psu.edu Questions & Discussion