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Microstructure/PlaceVsArmstrong: this state that the particular exists and is the reference of the counterfactual conditional, and is its truth maker is not the same state, however, as the microstructure of the particular, as Armstrong believes - although the existence of the microstructure is the "ultimate truth-maker".
The dispositional property (as an effect of the microstructure) is not the reference of the counterfactual conditional.
Dispositional Property/PlaceVsArmstrong: are not the identical with microstructure: 1) Hume: causally relativized things must be separated - 2) linguistically different specified. Microstructure: examine parts - dispositional property: submit the whole thing to a test.
Microstructure with disposition: contingent identification - unlike a posteriori identification: heat with molecular motion: necessary E.g. identity Genes/DNA: by definition causal role.
Microstructure/Place: wrong: that the breaking was caused by hitting plus microstructure.
Dispositional Properties/Place: consist in their possible past and future manifestations - Microstructure/Place: are categorical properties.
PlaceVsArmstong: there is a causal relation between a dispositional property and its microstructural base - ArmstrongVsPlace: he cannot allow that, because he has according to Hume to accept a separation between the two.
AR II = Disp
D. M. Armstrong
Dispositions, Tim Crane, London New York 1996
What is a Law of Nature? Cambridge 1983