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10. Modality / E. Possible worlds / 3. Transworld Objects / d. Haecceitism

[indistinguishable worlds might still have different objects]

16 ideas
Leibniz is some form of haecceitist [Leibniz, by Cover/O'Leary-Hawthorne]
Two objects may only differ in being different [Wittgenstein]
Haecceitism may or may not involve some logical connection to essence [Adams,RM, by Mackie,P]
Adams says anti-haecceitism reduces all thisness to suchness [Adams,RM, by Stalnaker]
Moderate Haecceitism says transworld identities are primitive, but connected to qualities [Adams,RM]
'Haecceitism' is common thisness under dissimilarity, or distinct thisnesses under resemblance [Kaplan]
'Haecceitism' says that sameness or difference of individuals is independent of appearances [Kaplan]
If quantification into modal contexts is legitimate, that seems to imply some form of haecceitism [Kaplan]
Anti-haecceitism says there is no more to an individual than meeting some qualitative conditions [Stalnaker]
Extreme haecceitists could say I might have been a poached egg, but it is too remote to consider [Lewis, by Mackie,P]
Haecceitism implies de re differences but qualitative identity [Lewis]
Extreme haecceitism says you might possibly be a poached egg [Lewis]
Haecceitism attributes to each individual a primitive identity or thisness [Forbes,G]
We believe in thisnesses, because we reject bizarre possibilities as not being about that individual [Forbes,G]
Haecceitism says identity is independent of qualities and without essence [Bird]
The theory of 'haecceitism' does not need commitment to individual haecceities [Mackie,P]