![Fig. 1](429fig1.jpg)
Fig. 1. Science is the study of cause-effect relationships for
agents, whose internal workings usually involve other agents.
![Fig. 2](429fig2.gif)
Fig. 2. Two simple examples of nonlinearities, one slower than
linear and the other faster than linear.
![Fig. 3](429fig3.jpg)
Fig. 3. Most scientists, of necessity, are studying a small part
of a much larger network, hoping that the part not being studied
can be treated as a fixed external stimulus, often leading to
erroneous conclusions and predictions.
Fig. 4. The simplest nonlinear networks that are capable of
exhibiting chaos.