
of randomness in this book, we will assume that we are talking about
something similar to the unpredictability that arises from complex sys-
tems such as cellular automata. This kind of randomness—and let’sgo
ahead and call it that—is an integral aspect of the environment; life and
intelligence must be able to respond to unexpected challenges.
We have noted that adaptation usually seems to include some ran-
dom component, but we have not asked why. If we consider an adaptive
system as one that is adjusting itself in response to feedback, then the
question is in finding the appropriate adjustment to make; this can be
very difficult in a complex system, ...