Counterfactual theories of causation have a hard time distinguishing hasteners from delayers. Or so I used to believe.
This past semester, while teaching a seminar on Causation, I learned better from a footnote (number 15) hidden at the end of this article by Jonathan Schaffer. There, I found a solution to the problem of hasteners and delayers, due to Chris Hitchcock, which is, to my mind, completely satisfying. The point of this post is to expand upon that solution.