Full Idea
Maybe a disposition is a more fundamental notion than a cause, in which case Lewis has from the very start erred in seeking a causal analysis, in a traditional, conceptual sense, of disposition terms.
Gist of Idea
If dispositions are more fundamental than causes, then they won't conceptually reduce to them
Source
comment on David Lewis (Causation [1973]) by Alexander Bird - Nature's Metaphysics 2.2.8
Book Reference
Bird,Alexander: 'Nature's Metaphysics' [OUP 2007], p.37
A Reaction
Is this right about Lewis? I see him as reducing both dispositions and causes to a set of bald facts, which exist in possible and actual worlds. Conditionals and counterfactuals also suffer the same fate.