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Full Idea
Some entailments do not suffice for supervenience. Being a brother entails being a sibling, but being a sibling does not supervene on being a brother. Sarah has a sister and Jack in an only child. Sarah, unlike Jack, is a sibling; neither is a brother.
Gist of Idea
Some entailments do not involve supervenience, as when brotherhood entails siblinghood
Source
Karen Bennett (Supervenience [2011], §3.2)
Book Ref
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.7
A Reaction
The whole point of supervenience, I take it, is to label a relation of tracking, while offering no explanation of the tracking. Entailment would be a rather powerful explanation, as would a dog's being tied to a cart.
Related Idea
Idea 16045 General facts supervene on particular facts, but cannot be inferred from them [Russell, by Bennett,K]
| 16040 | Aesthetics, morality and mind supervene on the physical? Modal on non-modal? General on particular? [Bennett,K] |
| 16039 | Supervenience: No A-difference without a B-difference [Bennett,K] |
| 16042 | The metaphysically and logically possible worlds are the same, so they are the same strength [Bennett,K] |
| 16043 | Supervenience is non-symmetric - sometimes it's symmetric, and sometimes it's one-way [Bennett,K] |
| 16044 | Some entailments do not involve supervenience, as when brotherhood entails siblinghood [Bennett,K] |
| 16046 | Reduction requires supervenience, but does supervenience suffice for reduction? [Bennett,K] |
| 16047 | Weak supervenience is in one world, strong supervenience in all possible worlds [Bennett,K] |
| 16049 | Definitions of physicalism are compatible with a necessary God [Bennett,K] |