Full Idea
All causal relations involving observable phenomena - all causal relations from daily experience - are cases of epiphenomenal causation.
Gist of Idea
All observable causes are merely epiphenomena
Source
Jaegwon Kim (Epiphenomenal and supervenient causation [1984], §2)
Book Reference
Kim,Jaegwon: 'Supervenience and Mind' [CUP 1993], p.95