
Visual displays 99
of what is presented, but a mixture of what is presented as it interacts with
our past history. We store up elements that are experienced and learned in
past history, which in turn assist in the perception of wholes even though
we might be shown only parts of the complete image. From a human factors
standpoint, Hochberg’s thinking, at the very least, gives one more reason to
be aware of the dierences not only between novices and experts, but also
among experts in dierent areas of expertise. When there is a wide variety
of expertise within a population of system users, an image could readily
produce dierent perceptions of ...