Ideas from 'Events' by David Lewis [1986], by Theme Structure

[found in 'Philosophical Papers Vol.2' by Lewis,David [OUP 1986,0-19-503646-8]].

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7. Existence / B. Change in Existence / 4. Events / a. Nature of events
Some events involve no change; they must, because causal histories involve unchanges
The events that suit semantics may not be the events that suit causation
Events have inbuilt essences, as necessary conditions for their occurrence
Events are classes, and so there is a mereology of their parts
7. Existence / B. Change in Existence / 4. Events / c. Reduction of events
An event is a property of a unique space-time region
8. Modes of Existence / B. Properties / 10. Properties as Predicates
Properties are very abundant (unlike universals), and are used for semantics and higher-order variables
26. Natural Theory / C. Causation / 1. Causation
Causation is a general relation derived from instances of causal dependence