3. the interaction

EXERCISE 3.11 [extra - not in book]

It is normally the case that you would like people to be able to do things as quickly and efficiently as possible.  In the case of virtual crackers the recipient first gets to a closed crackers page and then has to press another button to get to the open crackers page.  The closed has no information or functionality that is not also on the open crackers page, so why isn't the interface designed so that you get straight to the open crackers page?

answer available for tutors only

Fresh analysis of known example.  The 'closed cracker' page is there to increase suspense. Students may mention that designing for 'experience' is different from maximal efficiency.

Other exercises in this chapter

ex.3.1 (ans), ex.3.2 (ans), ex.3.3 (ans), ex.3.4 (open), ex.3.5 (open), ex.3.6 (tut), ex.3.7 (tut), ex.3.8 (open), ex.3.9 (tut), ex.3.10 (open), ex.3.11 (tut), ex.3.12 (tut)

all exercises for this chapter