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Some dependencies might function as
markers for particular characteristics of environments. For example,
severely resource constrained environments might be characterized by
resource contention failures repeating over and over, leading to the
observed dependency that one resource contention failure leads to
another. We would expect this dependency to appear in any type of
resource constrained environment, however superficially different,
whether it is a transportation planner, an air traffic control system,
or a forest fire fighter dispatcher. To look for such markers, we will
need to describe a hierarchy of failures and actions such that
dependency sets for different task environments can be compared.
Wed Oct 23 13:21:04 MDT 1996