more from this thinker     |     more from this text


Single Idea 17664

[filed under theme 18. Thought / E. Abstraction / 1. Abstract Thought ]

Full Idea

To every subject, its appropriate level of abstraction.

Gist of Idea

Each subject has an appropriate level of abstraction

Source

David M. Armstrong (What is a Law of Nature? [1983], 01.2)

Book Ref

Armstrong,D.M.: 'What is a Law of Nature?' [CUP 1985], p.7


A Reaction

Mathematics rises through many levels of abstraction. Economics can be very concrete or very abstract. It think it is clearer to talk of being 'general', rather than 'abstract'.


The 22 ideas with the same theme [general concepts not about concrete objects]:

The origin of geometry started in sensation, then moved to calculation, and then to reason [Proclus]
We abstract forms from appearances, and acquire knowledge of immaterial things [Aquinas]
Understanding consists entirely of grasping abstracted species [Aquinas]
A species of thing is an abstract idea, and a word is a sign that refers to the idea [Locke]
First we notice and name attributes ('abstracting'); then we notice that subjects share them ('generalising') [Reid]
The new philosophy thinks of the concrete in a concrete (not a abstract) manner [Feuerbach]
The study of the nature of Abstract Ideas does not belong to logic, but to a different science [Mill]
General conceptions are a necessary preliminary to Induction [Mill]
Defining 'direction' by parallelism doesn't tell you whether direction is a line [Dummett on Frege]
Abstractions can be interpreted dispositionally, as the ability to recognise or imagine an item [Price,HH]
If ideas have to be images, then abstract ideas become a paradoxical problem [Price,HH]
Apply '-ness' or 'class of' to abstract general terms, to get second-level abstract singular terms [Quine]
Each subject has an appropriate level of abstraction [Armstrong]
Abstract terms are acceptable as long as we know how they function linguistically [Dummett]
You can't infer a dog's abstract concepts from its behaviour [Dummett]
The idea of abstract objects is not ontological; it comes from the epistemological idea of abstraction [Plantinga]
Theists may see abstract objects as really divine thoughts [Plantinga]
Abstraction is usually explained either by example, or conflation, or abstraction, or negatively [Lewis]
Fine's 'procedural postulationism' uses creative definitions, but avoids abstract ontology [Fine,K, by Cook/Ebert]
Abstractions are non-spatial, or dependent, or derived from concepts [Lowe]
The older sense of 'abstract' is where 'redness' or 'group' is abstracted from particulars [Brown,JR]
'Abstract' nowadays means outside space and time, not concrete, not physical [Brown,JR]