B
Blue_Horizon
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Linus I haven’t had a lot of spare time for the forum lately but I have been reflecting on your views above during my daily peripatetic meditations in the cloisters of the local Buddhist temple.…Gravity is obviously a power, it is not a phantasm, it is not an abstracted immaterial representation. If you want to call it an occult power, that is fine with me, as long as you mean a power applied by angels or God. But that is only speculation. I think it is possible. Certainly no one has been able to explain it adequately and no one has found any gravitons as yet.
Linus2nd
I do not believe we can say that “gravity is obviously a (Aristotelian?) power”.
Aquinas would prob not agree either (even if he correctly understood its nature).
A power, it seems, is either active or passive, depending on whether the subject in question is causing (eg abstraction by the active intellect) or suffering the act in question (eg the senses). It cannot be both at the same time and in the same manner.
Gravity, properly understood, is in fact both active/passive at the same time and in the same manner. A mass is attracted to another mass just as it attracts the other mass to itself.
Also, if we ascribe an active power (gravity is not simply passive) to a material object - are we not essentially treating that object as at least possessing a low level spiritual principle? (Like a lesser version of the perishable soul of a plant). Alternatively if we do not like this conclusion we must hold that gravity is somehow imposed into matter as a proxy agent of some other separated, unseen moving principle.This is even less satisfactory.
So saying gravity is a “power” of inanimate matter does not seem correct.
Can gravity be considered an essential “property” of a material thing instead of a “power”.
I am not really sure how modern “property” translates into Aristotelian categories.
Is it a quality? Or is it an essential characteristic of what Aristotle calls quantity (like “extension”)?
I think it is even more primary than “extension”. It seems there can be “mass” without extension (eg a photon). And photon’s are influenced by gravity so may themselves exhert a gravitional force.
Yet Aristotle’s categories fail when discussing gravity.
There is a distinction to be made between a mass that exherts gravitational force (and is influenced by the force it receives from other masses) and the force itself.
A mass is obviously material but the effect it imposes on other objects at a distance is not mediated by material contact. The bodies involved have no mediating bodies (even very “thin” ones like air) to explain the causal linkage. This is impossible in the Aristotelian/Thomistic cosmology. All bodies must carve out a unique deliminated volume with no empty (immaterial? gaps) between them - otherwise there can be no efficient causality at play between different bodies.
Yet we know there is empty non-material “space” between bodies. And such bodies can still exhert efficient causality on each other across these empty gaps by means of the fundamental 4-5 forces.
So, if we are to keep using Aristotelian/Thomistic distinctions between material and immaterial (which are mutually contradictory) then where do we place these empty gaps and the forces that obviously traverse them as a medium of efficient causality?
Linus you would clearly want to say these forces and gaps are essentially “material” - otherwise you will have to explain the involved efficient cause linkages that traverse them as spiritual (ie immaterial) in some way.
Yet how can empty space (and the forces that traverse them) be called material when no matter or energy is involved. “Force” is not “energy” - though we do know that if such a force moves a mass any distance then energy has been transferred. But two stationary masses can certainly experience a mutual force without energy transfer.
Not does gravity involve physical “power” if you meant “gravity is obviously a (Newtonian) power”. In science power is a measure of how fast energy is being transferred from one mass to another. But, as above, gravity is a related but distinct phenomenon from power. There is no power involved when two stationary masses exhert a strong force on each other.
So how can “force” itself be classified as in any way “material” in the way that Aristotle/Aquinas defines that word? And if it cannot then, by your criteria, it must be called “immaterial” … and therefore “spiritual”??? Yet this is what drove Aristotle/Aquinas to suggest the celestial spheres had souls, or were moved by angels. Yet these suggestions are no longer plausible today because they essentially posit that normal secondary agent causalities (that are involved in the rest of material nature) are arbitrarily stated to not be at work here. And the discovery of “gravity” seems to confirm this philosophic observation of the non-plausability of medieval soul/angel explanations.
What is the solution?
I think we have to accept that things that we all agree are spiritual (souls, angels, God) are not exactly the same as things we call “immaterial”.
Aquinas/Aristotle tended to talk about the fifth element (aether) to fill this gap in difficult aspects observed (incorrectly perhaps) in the heavens. Aether is certainly material … yet though extended, can be non-sensible too.
Recent science seems to be warming to such a concept (eg the immaterial Higgs field which makes both force and mass possible for extended/material objects).
So I think you have still to reasonably explain “force” and “empty space” in your perhaps too simple an understanding of material versus immaterial/spiritual.