So you point to the word "blurring" and mention of a knowledge spectrum from particular to abstract. And further, you note that Quine seemed to understand some difference between science and philosophy, and therefore you conclude that Two Dogmas is about matters of degree of difference between analytic and synthetic statements. — frank
I realise the main importance of Quine is the extent to which he declares no difference (no difference in type), but here I'm referring to the difference he does acknowledge, the difference in degree. — Isaac
I said that Quine makes no room for degrees in his dismissal of the analytic/synthetic divide. — frank
Consider the question whether to countenance classes as entities. This, as I have argued
elsewhere,10a21b is the question whether to quantify with respect to variables which take classes as values. Now Carnap ["Empiricism, semantics, and ontology," Revue internationale de philosophie 4 (1950), 20-40.] has maintained11a that this is a question not of matters of fact but of choosing a convenient language form, a convenient conceptual scheme or framework for science. With this I agree, but only on the proviso that the same be conceded regarding scientific hypotheses generally. Carnap has recognized12a that he is able to preserve a double standard for ontological questions and scientific hypotheses only by assuming an absolute distinction between the analytic and the synthetic; and I need not say again that this is a distinction which I reject.
The totality of our so-called knowledge or beliefs, from the most casual matters of geography and history to the profoundest laws of atomic physics or even of pure mathematics and logic, is a manmade fabric which impinges on experience only along the edges. Or, to change the figure, total science is like a field of force whose boundary conditions are experience. A conflict with experience at the periphery occasions readjustments in the interior of the field. Truth values have to be redistributed over some of our statements. Re-evaluation of some statements entails re-evaluation of others, because of their logical interconnections -- the logical laws being in turn simply certain further statements of the system, certain further elements of the field. Having re-evaluated one statement we must re-evaluate some others, whether they be statements logically connected with the first or whether they be the statements of logical connections themselves. — Two Dogmas
But the total field is so undetermined by its boundary conditions, experience, that there is much latitude of choice as to what statements to re-evaluate in the light of any single contrary experience. No particular experiences are linked with any particular statements in the interior of the field, except indirectly through considerations of equilibrium affecting the field as a whole
Positing does not stop with macroscopic physical objects. Objects at the atomic level and beyond are posited to make the laws of macroscopic objects, and ultimately the laws of experience, simpler and more manageable; and we need not expect or demand full definition of atomic and subatomic entities in terms of macroscopic ones, any more than definition of macroscopic things in terms of sense data. Science is a continuation of common sense, and it continues the common-sense expedient of swelling ontology to simplify theory.
I said that Quine makes no room for degrees in his dismissal of the analytic/synthetic divide. You seemed to disagree and treat my statement as a claim that needed backing. — frank
Science deals with correspondence with observation (something we largely agree upon, especially when done by machine), whereas philosophy's veracity (for Quine) is measured by the degree to which posits satisfactorily fit within the web of beliefs (something on which we do not all generally agree - opinion). — Isaac
How does correspondence survive Quine's Word and Object? — frank
That's a very big topic. Have you read The Web of Belief? It has a really good section on how Quine treats observations as observations sentences and so brings them into his behaviourist stance on beliefs. — Isaac
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