more on this theme     |     more from this thinker


Single Idea 10796

[filed under theme 9. Objects / A. Existence of Objects / 3. Objects in Thought ]

Full Idea

If objects are thoughts, aren't we back to psychologism?

Clarification

'Psychologism' is the view that ideas are entirely within individual minds

Gist of Idea

If objects are thoughts, aren't we back to psychologism?

Source

Ruth Barcan Marcus (Nominalism and Substitutional Quantifiers [1978], p.166)

Book Ref

'Philosophy of Logic: an anthology', ed/tr. Jacquette,Dale [Blackwell 2002], p.166


A Reaction

Personally I don't think that would be the end of the world, but Fregeans go into paroxyms at the mention of 'psychology', because they fear that it destroys objectivity. That may be because they haven't understood thought properly.


The 13 ideas from 'Nominalism and Substitutional Quantifiers'

Maybe a substitutional semantics for quantification lends itself to nominalism [Marcus (Barcan)]
Anything which refers tends to be called a 'name', even if it isn't a noun [Marcus (Barcan)]
Nominalists see proper names as a main vehicle of reference [Marcus (Barcan)]
Is being just referent of the verb 'to be'? [Marcus (Barcan)]
Nominalists say predication is relations between individuals, or deny that it refers [Marcus (Barcan)]
Quantifiers are needed to refer to infinitely many objects [Marcus (Barcan)]
Substitutional semantics has no domain of objects, but place-markers for substitutions [Marcus (Barcan)]
If objects are thoughts, aren't we back to psychologism? [Marcus (Barcan)]
Substitutional language has no ontology, and is just a way of speaking [Marcus (Barcan)]
The nominalist is tied by standard semantics to first-order, denying higher-order abstracta [Marcus (Barcan)]
A true universal sentence might be substitutionally refuted, by an unnamed denumerable object [Marcus (Barcan)]
Substitutivity won't fix identity, because expressions may be substitutable, but not refer at all [Marcus (Barcan)]
Nominalists should quantify existentially at first-order, and substitutionally when higher [Marcus (Barcan)]