Combining Texts

All the ideas for 'fragments/reports', 'The Nature of Thought' and 'The Epistemology of Essence (draft)'

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8 ideas

2. Reason / A. Nature of Reason / 6. Coherence

2764	Full coherence might involve consistency and mutual entailment of all propositions [Blanshard, by Dancy,J]
	Full Idea: Blanshard says that in a fully coherent system there would not only be consistency, but every proposition would be entailed by the others, and no proposition would stand outside the system.
	From: report of Brand Blanshard (The Nature of Thought [1939], 2:265) by Jonathan Dancy - Intro to Contemporary Epistemology 8.1
	A reaction: Hm. If a proposition is entailed by the others, then it is a necessary truth (given the others) which sounds deterministic. You could predict all the truths you had never encountered. See 1578:178 for quote.

3. Truth / D. Coherence Truth / 1. Coherence Truth

19080	Coherence tests for truth without implying correspondence, so truth is not correspondence [Blanshard, by Young,JO]
	Full Idea: Blanshard said that coherent justification leads to coherence truth. It might be said that coherence is a test for truth, but truth is correspondence. But coherence doesn't guarantee correspondence, and coherence is a test, so truth is not correspondence.
	From: report of Brand Blanshard (The Nature of Thought [1939], Ch.26) by James O. Young - The Coherence Theory of Truth §2.2
	A reaction: [compression of Young's summary] Rescher (1973) says that Blanshard's argument depends on coherence being an infallible test for truth, which it isn't.

10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / a. Conceivable as possible

16978	If conceivability is a priori coherence, that implies possibility [Tahko]
	Full Idea: Maybe conceivability could be understood as a priori coherence, which implies possibility.
	From: 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.

14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence

16975	Essences are used to explain natural kinds, modality, and causal powers [Tahko]
	Full Idea: Essences are supposed to do a lot of explanatory work: natural kinds can be identified in terms of their essences, metaphysical modality can be reduced to essence, the causal power of objects can be explained with the help of essence.
	From: Tuomas E. Tahko (The Epistemology of Essence (draft) [2013], 1)
	A reaction: Natural kinds and modality are OK with me, but I'm dubious about the third one. If an essence explains something's causal powers, I have no idea what an essence might be. Essence are largely characterised in terms of causal powers.

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]
	Full Idea: Archelaus was the first person to say that the universe is boundless.
	From: report of Archelaus (fragments/reports [c.450 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 02.Ar.3

26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / a. Scientific essentialism

16976	Scientific essentialists tend to characterise essence in terms of modality (not vice versa) [Tahko]
	Full Idea: The conception of essence taken for granted in much of the 'scientific essentialist' literature is that essence can be explained in terms of modality (rather than the other way round).
	From: Tuomas E. Tahko (The Epistemology of Essence (draft) [2013], 2.1)
	A reaction: [He cites Ellis and Bird] That is, presumably, that they are inclined to say that the essence of gold is a set of necessary properties. Maybe conceptual necessities dictate the properties of gold, and they in turn dictate metaphysical necessities?

26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / b. Scientific necessity

16977	If essence is modal and laws are necessary, essentialist knowledge is found by scientists [Tahko]
	Full Idea: If essence is conceived in terms of modality and the laws of nature are metaphysically necessary, it seems that the laws of nature constitute essentialist knowledge, so the discovery of essences is mostly due to scientists.
	From: Tuomas E. Tahko (The Epistemology of Essence (draft) [2013], 2.1)
	A reaction: This seems muddled to me. The idea that the laws themselves are essences is way off target. No one thinks all knowledge of necessities is essentialist. Mumford, for example, doesn't even believe in laws.

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]
	Full Idea: Archelaus wrote that life on Earth began in a primeval slime.
	From: report of Archelaus (fragments/reports [c.450 BCE]) by Malcolm Schofield - Archelaus
	A reaction: This sounds like a fairly clearcut assertion of the production of life by evolution. Darwin's contribution was to propose the mechanism for achieving it. We should honour the name of Archelaus for this idea.