PART II
Requirements development
in which it appears the developer has invested a lot of work. Developers, too, might resist making
substantial changes in a carefully crafted electronic prototype.
When a low-fidelity prototype is being evaluated, someone plays the role of the computer while a
user walks through an evaluation scenario. The user initiates actions by saying aloud what she would
like to do at a specific screen: “I’m going to select Print Preview from the File menu.” The person
simulating the computer then displays the piece of paper or index card that represents the display
that would appear when the user takes that action. The user can judge whether that is indeed the
expected response and whether the item displayed contains the correct elements. If it’s wrong, you
simply take a blank page or index card and try again.
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