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Figure 2.22 – Bill Moggridge‟s comparison between Design Interaction and other fields
[23]
An interaction can be defined as an action between two entities that have an effect or
influence upon one another. As shown in Figure 2.23, to fully understand an interaction, the
interaction designer must understand how the user affects the world (do), how the user gets
feedback from the world (feel) and how the user knows about the world (know). By doing so, it
is possible to understand how to improve interactions, diminishing the negative aspects (as user
frustration and boredom) and enhancing the positive aspects (like pleasure and enthusiasm).
Figure 2.23 - Bill Verplank's three questions an interaction designer must answer when
creating an interactive product [23]
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