Events are defined using the operation. A unique event is defined by two principles: The existence condition states “ exists if and only if object exemplifies the -adic at time.” This means a unique event exists if the above is met. The identity condition states “ is if and only if, and.” Kim uses these to define events under five conditions:
One, they are unrepeatable, unchangeable particulars that include changes and the states and conditions of that event.
Three, only their constructive property creates distinct events.
Four, holding a constructive property as a generic event creates a type-token relationship between events, and events are not limited to their three requirements. Critics of this theory such as Myles Brand have suggested that the theory be modified so that an event had a spatiotemporal region; consider the event of a flash of lightning. The idea is that an event must include both the span of time of the flash of lightning and the area in which it occurred.
Other problems exist within Kim's theory, as he never specified what properties were. In addition, it is not specified if properties are few or abundant. The following is Kim's response to the above. There is also a major debate about the essentiality of a constitutive object. There are two major questions involved in this: If one event occurs, could it have occurred in the same manner if it were another person, and could it occur in the same manner if it would have occurred at a different time? Kim holds that neither are true and that different conditions would lead to a separate event. However, some consider it natural to assume the opposite.
Davidson
and John Lemmon proposed a theory of events that had two major conditions, respectively: a causal criterion and a spatiotemporal criterion. The causal criterion defines an event as two events being the same if and only if they have the same cause and effect. The spatiotemporal criterion defines an event as two events being the same if and only if they occur in the same space at the same time. Davidson however provided this scenario; if a metal ball becomes warmer during a certain minute, and during the same minute rotates through 35 degrees, must we say that these are the same event? However, one can argue that the warming of the ball and the rotation are possibly temporally separated and are therefore separate events.
Lewis
theorized that events are merely spatiotemporal regions and properties. He defines an event as “e is an event only if it is a class of spatiotemporal regions, both thisworldly and otherworldly.” The only problem with this definition is it only tells us what an event could be, but does not define a unique event. This theory entails modal realism, which assumes possible worlds exist; worlds are defined as sets containing all objects that exist as a part of that set. However, this theory is controversial. Some philosophers have attempted to remove possible worlds, and reduce them to other entities. They hold that the world we exist in is the only world that actually exists, and that possible worlds are only possibilities. Lewis’ theory is composed of four key points. Firstly, the non-duplication principle; it states that x and y are separate events if and only if there is one member of x that is not a member of y. Secondly, there exist regions that are subsets of possible worlds and thirdly, events are not structured by an essential time.
Badiou
In Being and Event, Alain Badiou writes that the event is a multiple which basically does not make sense according to the rules of the "situation," in other words existence. Hence, the event "is not," and therefore, in order for there to be an event, there must be an "intervention" which changes the rules of the situation in order to allow that particular event to be. In his view, there is no "one," and everything that a "multiple." "One" happens when the situation "counts," or accounts for, acknowledges, or defines something: it "counts it as one." For the event to be counted as one by the situation, or counted in the one of the situation, an intervention needs to decide its belonging to the situation. This is because his definition of the event violates the prohibition against self-belonging, thus does not count as extant on its own.
Deleuze
lectured on the concept of event on March 10, 1987. A sense of the lecture is described by James Williams. Williams also wrote, "From the point of view of the difference between two possible worlds, the event is all important". He also stated, "Every event is revolutionary due to an integration of signs, acts and structures through the whole event. Events are distinguished by the intensity of this revolution, rather than the types of freedom or chance." In 1988 Deleuze published a magazinearticle "Signes et événements" In his book Nietszche and Philosophy, he addresses the question "Which one is beautiful?" In the preface to the English translation he wrote:
Kirkeby
The Danish philosopher Ole Fogh Kirkeby deserves mentioning, as he has written a comprehensive trilogy about the event, or in Danish "begivenheden". In the first work of the trilogy "Eventum tantum – begivenhedens ethos" he distinguishes between three levels of the event, inspired from Nicola Cusanus: Eventum tantum as non aliud, the alma-event and the proto-event.
