Social Interactions in Post-design Phases in Product Development and Consumption: Computational Social Science Modeling - Principia Designae: Pre-Design, Design, and Post-Design - page 155

a
(stop at t = 327)
b
(stop at t = 741)
Fig. 11.6 Design trajectory from a single run for three different Producer rules. Key: black dot ¼
active set; grey dot ¼ previously active but no longer produced; light blue dot ¼ 'adjacent
possible' designs; hollow grey dots ¼ all possible designs; red arrows: the main trajectory (a)
Rule 1. Inset: Product design #2 (b) Rule 2. Inset: Product design #108 (left) and #100 (right)(c)
Rule 3. Inset: Product design #105 (left) and #28 (right)
These diagrams reveal three broad differences in trajectories. First, the speed of
movement along the trajectory is very different. Rule 1 moves very quickly to a
fixed point where it only produces Product #2. We suspect that this pattern will be
repeated with many other initial conditions, though maybe not all. Rule 2 moves
fairly quickly toward the region of design space that is populated by the most
complex designs. But Rule 3 meanders and moves more slowly, even oscillating
between brand new designs and revivals of previous designs.
Second, the destination of the trajectories are clearly different. Rule 1 seems to
gravitate toward simple designs, while Rule 2 does the opposite. As might be