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16554
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Activities have place, rate, duration, entities, properties, modes, direction, polarity, energy and range [Machamer/Darden/Craver]
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Full Idea:
Activities can be identified spatiotemporally, and individuated by rate, duration, and types of entity and property that engage in them. They also have modes of operation, directionality, polarity, energy requirements and a range.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 3)
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A reaction:
This is their attempt at making 'activity' one of the two central concepts of ontology, along with 'entity'. A helpful analysis. It just seems to be one way of slicing the cake.
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17302
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Ground is irreflexive, asymmetric, transitive, non-monotonic etc. [Audi,P]
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Full Idea:
The logical principles about grounding include irreflexivity, asymmetry, transitivity, non-monotonicity, and so forth.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.8)
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A reaction:
[It can't ground itself, there is no mutual grounding, grounds of grounds ground, and grounding judgements are not fixed]
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17292
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Avoid 'in virtue of' for grounding, since it might imply a reflexive relation such as identity [Audi,P]
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Full Idea:
We should not use 'in virtue of' where it might express a reflexive relation, such as identity. Since grounding is a relation of determination, and closely linked to the concept of explanation, it is irreflexive and asymmetric.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.2)
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A reaction:
E.g. he says someone isn't a bachelor in virtue of being an unmarried man, since a bachelor just is an unmarried man. I can't disagree. 'Determination' looks like the magic word, even if we don't know how it cashes out.
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17294
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Grounding is a singular relation between worldly facts [Audi,P]
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Full Idea:
On my view, grounding is a singular relation between facts. ...Facts, on this view, are obtaining states of affairs.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.2)
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A reaction:
He rest this claim on his 'worldly' view of facts, Idea 17293. I seem to be agreeing with him. Note that it is not between types of fact, even if there are such general truths, such as in chemistry.
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17300
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If grounding relates facts, properties must be included, as well as objects [Audi,P]
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Full Idea:
Taking facts to be the relata of grounding has the interesting consequence that it does not relate ordinary particulars, objects, considered apart from their properties.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.4)
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A reaction:
It will depend on what you mean by properties, and it seems to me that something like 'powers' must be invoked, to get the active character that seems to be involved in grounding.
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17301
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Reduction is just identity, so the two things are the same fact, so reduction isn't grounding [Audi,P]
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Full Idea:
I deny that when p grounds q, q thereby reduces to p, and I deny that if q reduces to p, then p grounds q. ...On my view, reduction is nothing other than identity, so p is the same fact as q.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.5)
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A reaction:
Very good. I can't disagree with any of it, and it is crystal clear. Philosophical heaven.
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16562
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We understand something by presenting its low-level entities and activities [Machamer/Darden/Craver]
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Full Idea:
The intelligibility of a phenomenon consists in the mechanisms being portrayed in terms of a field's bottom out entities and activities.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 7)
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A reaction:
In other words, we understand complex things by reducing them to things we do understand. It would, though, be illuminating to see a nest of interconnected activities, even if we understood none of them.
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17299
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There are plenty of examples of non-causal explanation [Audi,P]
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Full Idea:
There are a number of explanations where it seems clear that causation is not involved at all: normative grounded in non-normative, disposition grounded in categorical, aesthetic grounded in non-aesthetic, semantic in social and psychological.
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From:
Paul Audi (Clarification and Defense of Grounding [2012], 3.3)
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A reaction:
Apart from dispositions, perhaps, these all seem to be experienced phenomena grounded in the physical world. 'Determination' is the preferred term for non-causal grounding.
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16555
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Functions are not properties of objects, they are activities contributing to mechanisms [Machamer/Darden/Craver]
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Full Idea:
It is common to speak of functions as properties 'had by' entities, …but they should rather be understood in terms of the activities by virtue of which entities contribute to the workings of a mechanism.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 3)
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A reaction:
I'm certainly quite passionately in favour of cutting down on describing the world almost entirely in terms of entities which have properties. An 'activity', though, is a bit of an elusive concept.
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16528
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Mechanisms are not just push-pull systems [Machamer/Darden/Craver]
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Full Idea:
One should not think of mechanisms as exclusively mechanical (push-pull) systems.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 1)
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A reaction:
The difficulty seems to be that you could broaden the concept of 'mechanism' indefinitely, so that it covered history, mathematics, populations, cultural change, and even mathematics. Where to stop?
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16553
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Our account of mechanism combines both entities and activities [Machamer/Darden/Craver]
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Full Idea:
We emphasise the activities in mechanisms. This is explicitly dualist. Substantivalists speak of entities with dispositions to act. Process ontologists reify activities and try to reduce entities to processes. We try to capture both intuitions.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 3)
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A reaction:
[A quotation of selected fragments] The problem here seems to be the raising of an 'activity' to a central role in ontology, when it doesn't seem to be primitive, and will typically be analysed in a variety of ways.
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16559
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Descriptions of explanatory mechanisms have a bottom level, where going further is irrelevant [Machamer/Darden/Craver]
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Full Idea:
Nested hierachical descriptions of mechanisms typically bottom out in lowest level mechanisms. …Bottoming out is relative …the explanation comes to an end, and description of lower-level mechanisms would be irrelevant.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 5.1)
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A reaction:
This seems to me exactly the right story about mechanism, and it is a story I am associating with essentialism. The relevance is ties to understanding. The lower level is either fully understood, or totally baffling.
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16564
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There are four types of bottom-level activities which will explain phenomena [Machamer/Darden/Craver]
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Full Idea:
There are four bottom-out kinds of activities: geometrico-mechanical, electro-chemical, electro-magnetic and energetic. These are abstract means of production that can be fruitfully applied in particular cases to explain phenomena.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 7)
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A reaction:
I like that. It gives a nice core for a metaphysics for physicalists. I suspect that 'mechanical' can be reduced to something else, and that 'energetic' will disappear in the final story.
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16558
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Laws of nature have very little application in biology [Machamer/Darden/Craver]
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Full Idea:
The traditional notion of a law of nature has few, if any, applications in neurobiology or molecular biology.
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From:
Machamer,P/Darden,L/Craver,C (Thinking About Mechanisms [2000], 3.2)
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A reaction:
This is a simple and self-evident fact, and bad news for anyone who want to build their entire ontology around laws of nature. I take such a notion to be fairly empty, except as a convenient heuristic device.
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