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Full Idea
Weak supervenience says there is no possible world that contains individuals that are B-indiscernible but A-discernible. Strong supervenience entails the same even if they are in different possible worlds.
Gist of Idea
Weak supervenience is in one world, strong supervenience in all possible worlds
Source
Karen Bennett (Supervenience [2011], §4.1)
Book Ref
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.14
A Reaction
In other words (I presume), in simple language, the weak version says they happen supervene, the strong version says they have to supervene.
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] |