Deterministic and random behavior It is human nature to assume that there is a causal force behind everything that we observe, but some times this is not the case. However, even when we have a perfect understanding of a phenomenon, that is we know how all the underlying processes work, we might still want to use nondeterminism in our model. Can you explain some reasons why you would want to include random behavior in a model that could be completely deterministic? Is it possible to have deterministic macrobehavior even though the microbehavior is nondeterministic? Build a model of agents moving such that they always result in the same pattern even though they take random steps and random turns to get there.