16629
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By comparing qualities and features, reason can gradually infer the nature of substance [Grosseteste]
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Full Idea:
Awakened reason distinguishes color from size and shape from body and then shape and size from the substance of body, and so by drawing distinctions and abstracting, it arrives at a grasp of the substance of body, which supports size, shape and color.
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From:
Robert Grosseteste (Commentary on 'Posterior Analytics' [1226], I.14), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 07.4
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A reaction:
This optimistic view influenced Aquinas, and is called 'incrementalism' by Pasnau. It is the spirit of scientific essentialism, and a nice instance of inference to the best explanation (though 'substance' in itself explains virtually nothing).
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3398
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Epiphenomenalism makes the mind totally pointless [Alexander,S]
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Full Idea:
Epiphenomenalism supposes something to exist in nature which has nothing to do and no purpose to serve.
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From:
Samuel Alexander (works [1927]), quoted by Jaegwon Kim - Philosophy of Mind p.129
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A reaction:
An objection, but not, I think, a strong one. The fact, for example, that sweat is shiny is the result of good evolutionary reasons, but I cannot think of any purpose which it serves. All events which are purposeful are likely to have side-effects.
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14494
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Epiphenomenalism is like a pointless nobleman, kept for show, but soon to be abolished [Alexander,S]
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Full Idea:
Epiphenomenalism supposes something to exist in nature which has nothing to do, no purpose to serve, a species of noblesse which depends on the work of its inferiors, but is kept for show and might as well, and undoubtedly would in time be abolished.
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From:
Samuel Alexander (Space, Time and Deity (2 vols) [1927], 2:8), quoted by Jaegwon Kim - Nonreductivist troubles with ment.causation IV
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A reaction:
Wonderful! Kim quotes this, and labels the implicit slogan (to be real is to have causal powers) 'Alexander's Dictum'. All the examples given of epiphenomena are only causally inert within a defined system, but they act causally outside the system.
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21731
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Fields can be 'scalar', or 'vector', or 'tensor', or 'spinor' [Baggott]
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Full Idea:
Fields can be 'scalar', with no particular direction (pointing, but not pushing or pulling); or 'vector', with a direction (like magnetism, or Newtonian gravity); or 'tensor' (needing further parameters); or 'spinor' (depending on spin orientation).
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From:
Jim Baggott (Farewell to Reality: fairytale physics [2013], 2 'Quantum')
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A reaction:
[compressed] So the question is, why do they differ? What is it in the nature of each field the result in a distinctive directional feature?
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24161
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Thermodynamics sees nature as a continuous flow of energy, as radiation and as substance [Baggott]
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Full Idea:
Thermodynamics reinforced a vision of nature as one of harmonious flow. Energy, which could be neither created nor destroyed, flowed continuously between radiation and material substance, in themselves unbroken continua.
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From:
Jim Baggott (The Quantum Story: 40 moments [2011], 01)
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A reaction:
Interestingly, Einstein's Special Relativity e = mc2 seems to endorse this view, by equation energy and mass. I've always wanted to know what energy is, but no one seems to know.
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