Philosophy Ideas Database

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800	10.	Modality
	A.	Necessity
8	1.	Types of Modality
25	2.	Nature of Necessity
26	3.	Types of Necessity
14	4.	De re / De dicto modality
29	5.	Metaphysical Necessity
40	6.	Logical Necessity
18	7.	Natural Necessity
6	8.	Transcendental Necessity
1	9.	Normative Necessity
7	10.	Impossibility
20	11.	Denial of Necessity
	B.	Possibility
41	1.	Possibility
3	2.	Epistemic possibility
4	3.	Combinatorial possibility
13	4.	Potentiality
10	5.	Contingency
15	6.	Probability
10	7.	Chance
11	8.	Conditionals	a.	Conditionals
6			b.	Types of conditional
25			c.	Truth-function conditionals
15			d.	Non-truthfunction conditionals
6			e.	Supposition conditionals
6			f.	Pragmatics of conditionals
23	9.	Counterfactuals
	C.	Sources of Modality
28	1.	Sources of Necessity
3	2.	Necessity as Primitive
11	3.	Necessity by Convention
13	4.	Necessity from Concepts
15	5.	Modality from Actuality
17	6.	Necessity from Essence
	D.	Knowledge of Modality
22	1.	A Priori Necessary
6	2.	A Priori Contingent
10	3.	A Posteriori Necessary
26	4.	Conceivable as Possible	a.	Conceivable as possible
10			b.	Conceivable but impossible
6			c.	Possible but inconceivable
	E.	Possible worlds
32	1.	Possible Worlds	a.	Possible worlds
8			b.	Impossible worlds
13			c.	Possible worlds realism
13			d.	Possible worlds actualism
29			e.	Against possible worlds
32	2.	Nature of Possible Worlds	a.	Nature of possible worlds
8			b.	Worlds as fictions
7			c.	Worlds as propositions
31	3.	Transworld Objects	a.	Transworld identity
22			b.	Rigid designation
31			c.	Counterparts
16			d.	Haecceitism
9			e.	Possible Objects