1. A method of selected alert delivery in a distributed processing system, the method comprising: receiving a plurality of events from one or more event producing components of the distributed processing system, wherein each of the plurality of events is a notification of a particular occurrence on a component of the distributed processing system, each event producing component comprising an aggregation of computer hardware and software; creating, by an incident analyzer, in dependence upon the events a truth space representing events that make one or more conditional event processing rules true, the truth space including a set of truth points, each truth point including a set of events and a set of event locations, including: determining occurrences of events that make a particular conditional event processing rule true; determining a location of event producing components that can generate the events that make the particular conditional event processing rule true; and storing the events that make the particular conditional event processing rule true and the location of the event producing components that can generate the events that make the particular conditional event processing rule true as a truth point; creating, by the incident analyzer, in dependence upon the truth space one or more alerts, wherein the one or more alerts are unique to the combination of the events that make the particular conditional even processing rule true, and the location of the event producing components that can generate the events that make the particular conditional event processing rule true, wherein creating in dependence upon the events a truth space further comprises for each event: identifying one or more locations associated with the event; selecting a particular location of the one or more locations as a truth location according to predetermined location selection rules; applying a conditional rule to a plurality of truth events; and identifying one or more of those truth events that make the conditional rule true; and sending, by the incident analyzer, the alerts to at least one component of the distributed processing system.