
288 9 Chapter 13: Prototyping and Testing
many) indicates that there is a real choice to be made and that
you do want them to pay attention.
One important point to remember is that the results you format should be
correct. You may know that it does not really matter what the values of num-
bers are in the formatted display, but to a user who understands the data, it
is hard to see past a display that has absurd data in
it.
Using Interface
Labs
Preserving
Innocents
In designing interfaces, try to observe real users working with
the interface. This can be done in a formal lab where you sit
behind a two-way mirror, but you can also do it ...