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Single Idea 16978

[filed under theme 10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / a. Conceivable as possible ]

Full Idea

Maybe conceivability could be understood as a priori coherence, which implies possibility.

Gist of Idea

If conceivability is a priori coherence, that implies possibility

Source

Tuomas E. Tahko (The Epistemology of Essence (draft) [2013], 3.2)

A Reaction

I'm not quite sure why 'a priori' has to be there. Assessing conceivability just is assessing coherence. That couches it as a rational activity, rather than as a purely imaginary one. Trying to conceive a square circle isn't just daydreaming.

The 26 ideas with the same theme [ if conceivable then it is possible]:

22149 Scholastics assess possibility by what has actually happened in reality [Suárez, by Boulter]
4818 People who are ignorant of true causes imagine anything can change into anything else [Spinoza]
20310 Error does not result from imagining, but from lacking the evidence of impossibility [Spinoza]
23487 What is thinkable is possible [Wittgenstein]
5819 Conceivability is no proof of possibility [Putnam]
5478 Imagination tests what is possible for all we know, not true possibility [Ellis]
15098 Empirical evidence shows that imagining a phenomenon can show it is possible [Shoemaker]
15100 Imagination reveals conceptual possibility, where descriptions avoid contradiction or incoherence [Shoemaker]
15764 'Conceivable' is either not-provably-false, or compatible with what we know? [Shoemaker]
13967 Kripke's essentialist necessary a posteriori opened the gap between conceivable and really possible [Soames on Kripke]
13970 Kripke gets to the necessary a posteriori by only allowing conceivability when combined with actuality [Kripke, by Soames]
14659 We can imagine being beetles or alligators, so it is possible we might have such bodies [Plantinga]
16522 It is hard or impossible to think of Caesar as not human [Wiggins]
16473 Modal Rationalism: conceivability gives a priori access to modal truths [Chalmers, by Stalnaker]
19258 Evaluate primary possibility from some world, and secondary possibility from this world [Chalmers, by Vaidya]
13963 Maybe logical possibility does imply conceivability - by an ideal mind [Chalmers]
16536 Williamson can't base metaphysical necessity on the psychology of causal counterfactuals [Lowe on Williamson]
9596 We scorn imagination as a test of possibility, forgetting its role in counterfactuals [Williamson]
18853 A proposition is 'correctly' conceivable if an ominiscient being could conceive it [Rosen]
15167 Empiricism explores necessities and concept-limits by imagining negations of truths [Sidelle]
15177 Contradictoriness limits what is possible and what is imaginable [Sidelle]
9505 Empiricist saw imaginability and possibility as close, but now they seem remote [Bird]
14606 Only ideal conceivability could indicate what is possible [Schaffer,J]
16978 If conceivability is a priori coherence, that implies possibility [Tahko]
19440 How do you know you have conceived a thing deeply enough to assess its possibility? [Vaidya]
19267 Define conceivable; how reliable is it; does inconceivability help; and what type of possibility results? [Vaidya]