In technology, ideas and innovation drive successful companies.
As new markets arise they quickly become crowded with
competitors. Questions such as "How can we differentiate
ourselves?" arise. The minimal start-up cost for software and
internet companies magnify this question. Excellent user design
and interaction can be a differentiating factor. Although it
does not drive immediate customers in the same manner as new
features, it should not be ignored. Once a user passes their
frustration limit, their advocacy is lost. The following
sections describe two design principles at the core of design
and interaction.Fitts' Law Fitts' Law is defined as follows:
"The time required to rapidly move to a target area is a
function of the distance to the target and the size of the
target." In simpler terms, the bigger or closer an element is,
the faster a user can move to it. The starting position is based
on the current location of the cursor. When moving to an
element, the initial movement is fast. As a user approaches