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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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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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9329
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Justification is coherence with a background system; if irrefutable, it is knowledge [Lehrer]
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Full Idea:
Justification is coherence with a background system which, when irrefutable, converts to knowledge.
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From:
Keith Lehrer (Consciousness,Represn, and Knowledge [2006])
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A reaction:
A problem (as the theory stands here) would be whether you have to be aware that the coherence is irrefutable, which would seem to require a pretty powerful intellect. If one needn't be aware of the irrefutability, how does it help my justification?
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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
|
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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20034
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Intentions must be mutually consistent, affirm appropriate means, and fit the agent's beliefs [Bratman, by Wilson/Schpall]
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Full Idea:
Bratman's three main norms of intention are 'internal consistency' (between a person's intentions), 'means-end coherence' (the means must fit the end), and 'consistency with the agent's beliefs' (especially intending to do and believing you won't do).
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From:
report of Michael Bratman (Intention, Plans, and Practical Reason [1987]) by Wilson,G/Schpall,S - Action 4
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A reaction:
These are controversial, but have set the agenda for modern non-reductive discussions of intention.
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20033
|
Intentions are normative, requiring commitment and further plans [Bratman, by Wilson/Schpall]
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Full Idea:
Intentions involve normative commitments. We settle on intended courses, if there is no reason to reconsider them, and intentions put pressure on us to form further intentions in order to more efficiently coordinate our actions.
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From:
report of Michael Bratman (Intention, Plans, and Practical Reason [1987]) by Wilson,G/Schpall,S - Action 4
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A reaction:
[a compression of their summary] This distinguishes them from beliefs and desires, which contain no such normative requirements, even though they may point that way.
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20026
|
Intention is either the aim of an action, or a long-term constraint on what we can do [Bratman, by Wilson/Schpall]
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Full Idea:
We need to distinguish intention as an aim or goal of actions, and intentions as a distinctive state of commitment to future action, a state that results from and subsequently constrains our practical endeavours as planning agents.
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From:
report of Michael Bratman (Intention, Plans, and Practical Reason [1987]) by Wilson,G/Schpall,S - Action 2
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A reaction:
I'm not sure how distinct these are, given the obvious possibility of intermediate stages, and the embracing of any available short-cut. If I could mow my lawn with one blink, I'd do it.
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20032
|
Bratman rejected reducing intentions to belief-desire, because they motivate, and have their own standards [Bratman, by Wilson/Schpall]
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Full Idea:
Bratman motivated the idea that intentions are psychologically real and not reducible to desire-belief complexes by observing that they are motivationally distinctive, and subject to their own unique standards of rational appraisal.
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From:
report of Michael Bratman (Intention, Plans, and Practical Reason [1987]) by Wilson,G/Schpall,S - Action 4
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A reaction:
If I thought my belief was a bit warped, and my desire morally corrupt, my higher self might refuse to form an intention. If so, then Bratman is onto something. But maybe my higher self has its own beliefs and desires.
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16558
|
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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