Full Idea
Not all singular causal statements are of Davidson's event-event type. Many involve conditions, so there are condition-event (weakness/collapse), event-condition (explosion/movement), and condition-condition (hot/warming) causal connections.
Gist of Idea
Davidson can't explain causation entirely by events, because conditions are also involved
Source
Keith Campbell (The Metaphysic of Abstract Particulars [1981], §3)
Book Reference
'Properties', ed/tr. Mellor,D.H. /Oliver,A [OUP 1997], p.129
A Reaction
Fans of Davidson need to reduce conditions to events. The problem of individuation keeps raising its head. Davidson makes it depend on description. Kim looks good, because events, and presumably conditions, reduce to something small and precise.