Some complex systems are transformational, of an input-process output type, repeatedly carryingout their prescribed work for each new set of inputs. A far more problematic class comprises large systems that are heavily control- or event-driven.
Such systems—dubbed reactive because they react to various kinds of events, signals,and conditions in intricate ways—are often concurrent and distributed.Reactive animation, a patent pending technology, offers great promise as a way to enhance the visualization of system behavior, especially for reactive systems, which are a central part of most current computerized technologies.