Difference between before and After
The concept of Event expresses the temporal quality of elements in meaning-constituting systems.
> […], every event (communication or thought) does not simply occur; it also establishes the difference between before and after. With this difference, referential horizons for other possibilities (of communication in social systems and of thoughts in psychic systems) are also established. That is to say, other things are possible after the event, and this difference (as a difference) gives the elements of the system, despite their lack of duration, a certain Operative Connectivity.