Full Idea
If counterfactual claims can be made about causation, this suggests that there is more to it than mere regular succession.
Clarification
'Counterfactuals' are situations involving "IF x had occurred.."
Gist of Idea
Counterfactual claims about causation imply that it is more than just regular succession
Source
Stathis Psillos (Causation and Explanation [2002], §2.2)
Book Reference
Psillos,Stathis: 'Causation and Explanation' [Acumen 2002], p.62
A Reaction
Interesting. Even Hume makes counterfactual claims in his first definition of cause, and all claims of causation seem to go beyond the immediate evidence.