Full Idea
Disagreement about 'the' cause is only disagreement about which part of the causal history is most salient for the purposes of some particular inquiry.
Gist of Idea
We only pick 'the' cause for the purposes of some particular enquiry.
Source
David Lewis (Causal Explanation [1986], I)
Book Reference
Lewis,David: 'Philosophical Papers Vol.2' [OUP 1986], p.215
A Reaction
I don't believe this. In the majority of cases I see the cause of an event, without having any interest in any particular enquiry. It is just so obvious that there isn't even a disagreement. Maybe there is only one sensible enquiry.