Boundaries

The different plans are myriad in number but not infinite (...) For any present, for any perspective emerging from this past, there is the influence of the many layers of the past and of many interactions, networks of interactions events (...) "The casual past of an event consists of all the events that could have influenced it. The influence must travel from some event in the past at the speed of light or less. So the light rays arriving at an event form the outer boundary of the past of an event and make up what we call the past light cone of an event"...

The Limits of Intensity and the Mechanics of Death
by Dorothea Olkowski

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DELEUZE AND PHILOSOPHY
Ed. Constantin V. Boundas, 2006