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Single Idea 7685
[filed under theme 9. Objects / A. Existence of Objects / 1. Physical Objects
]
Full Idea
To be an object is to be a predication subject, and to be this as opposed to that particular object, whether existent or not, is to have a distinctive combination of properties.
Gist of Idea
An object is a predication subject, distinguished by a distinctive combination of properties
Source
Dale Jacquette (Ontology [2002], Ch. 2)
Book Ref
Jacquette,Dale: 'Ontology' [Acumen 2002], p.59
A Reaction
The last part depends on Leibniz's Law. The difficulty is that two objects may only be distinguishable by being in different places, and location doesn't look like a property. Cf. Idea 5055.
Related Idea
Idea 5055
No two things are totally identical [Leibniz]
The
31 ideas
from Dale Jacquette
9456
|
Modal logic is multiple systems, shown in the variety of accessibility relations between worlds
[Jacquette]
|
9457
|
The two main views in philosophy of logic are extensionalism and intensionalism
[Jacquette]
|
9461
|
Intensionalists say meaning is determined by the possession of properties
[Jacquette]
|
9458
|
Extensionalists say that quantifiers presuppose the existence of their objects
[Jacquette]
|
9460
|
Extensionalist semantics forbids reference to nonexistent objects
[Jacquette]
|
9459
|
Extensionalist semantics is circular, as we must know the extension before assessing 'Fa'
[Jacquette]
|
9463
|
Classical logic is bivalent, has excluded middle, and only quantifies over existent objects
[Jacquette]
|
9465
|
Substitutional universal quantification retains truth for substitution of terms of the same type
[Jacquette]
|
9466
|
Nominalists like substitutional quantification to avoid the metaphysics of objects
[Jacquette]
|
7679
|
Ontology is the same as the conceptual foundations of logic
[Jacquette]
|
7678
|
Ontology must include the minimum requirements for our semantics
[Jacquette]
|
7683
|
Logic is based either on separate objects and properties, or objects as combinations of properties
[Jacquette]
|
7684
|
Reduce states-of-affairs to object-property combinations, and possible worlds to states-of-affairs
[Jacquette]
|
7682
|
Logic is not just about signs, because it relates to states of affairs, objects, properties and truth-values
[Jacquette]
|
7681
|
Logic describes inferences between sentences expressing possible properties of objects
[Jacquette]
|
7689
|
The modal logic of C.I.Lewis was only interpreted by Kripke and Hintikka in the 1960s
[Jacquette]
|
7692
|
Being is maximal consistency
[Jacquette]
|
7687
|
Existence is completeness and consistency
[Jacquette]
|
7685
|
An object is a predication subject, distinguished by a distinctive combination of properties
[Jacquette]
|
7691
|
The actual world is a consistent combination of states, made of consistent property combinations
[Jacquette]
|
7688
|
The actual world is a maximally consistent combination of actual states of affairs
[Jacquette]
|
7695
|
Do proposition-structures not associated with the actual world deserve to be called worlds?
[Jacquette]
|
7697
|
On Russell's analysis, the sentence "The winged horse has wings" comes out as false
[Jacquette]
|
7703
|
If classes can't be eliminated, and they are property combinations, then properties (universals) can't be either
[Jacquette]
|
7701
|
Can a Barber shave all and only those persons who do not shave themselves?
[Jacquette]
|
7694
|
We must experience the 'actual' world, which is defined by maximally consistent propositions
[Jacquette]
|
7699
|
Numbers, sets and propositions are abstract particulars; properties, qualities and relations are universals
[Jacquette]
|
7702
|
The extreme views on propositions are Frege's Platonism and Quine's extreme nominalism
[Jacquette]
|
7706
|
If qualia supervene on intentional states, then intentional states are explanatorily fundamental
[Jacquette]
|
7704
|
Reduction of intentionality involving nonexistent objects is impossible, as reduction must be to what is actual
[Jacquette]
|
7707
|
To grasp being, we must say why something exists, and why there is one world
[Jacquette]
|