
180 ◾ Software Designers in Action: A Human-Centric Look at Design Work
© 2010 Taylor & Francis Group, LLC
see Figure 6.3, p. 134.) Looking at this diagram, it is clear that these central ideas are not
created uniformly throughout, but rather there are bursts of inuential ideas, followed by
lulls, lending an ebb and ow to the design process.
When we investigated these periods of lull suggested by the diagram more closely, we
found that they very oen corresponded to moments of focus setting in the design ses-
sions. e designers, of course, could not keep the entire design in mind at once. So at
various points they would describe an aspec ...