It is from this operational asymmetry that complexity in event processing is required. In other words, as distributed networks grow in complexity, it is difficult to determine causal dependence when trying to diagnosis a distributed networked system. Most who work in a large distributed network ecosystem (cyberspace) understand this. The CEP notion of “the event cloud” was an attempt to express this complexity and uncertainly (in cyberspace).
Some definitions key on the question of the probability of encountering a given condition of a system once characteristics of the system are specified. Warren Weaver has posited that the complexity of a particular system is the degree of difficulty in predicting the properties of the system if the properties of the system’s parts are given. In Weaver’s view, complexity comes in two forms: disorganized complexity, and organized complexity. [2] Weaver’s paper has influenced contemporary thinking about complexity. [3]