7 ideas
14637 | Only individuals have essences, so numbers (as a higher type based on classes) lack them [McMichael] |
Full Idea: Essentialism is not verified by the observation that numbers have interesting essential properties, since they are properties of classes and so are entities of a higher logical type than individuals. | |
From: Alan McMichael (The Epistemology of Essentialist Claims [1986], Intro) | |
A reaction: This relies on a particular view of number (which might be challenged), but is interesting when it comes to abstract entities having essences. Only ur-elements in set theory could have essences, it seems. Why? Rising in type destroys essence? |
14636 | Essences are the interesting necessary properties resulting from a thing's own peculiar nature [McMichael] |
Full Idea: Essentialism says some individuals have certain 'interesting' necessary properties. If it exists, it has that property. The properties are 'interesting' as had in virtue of their own peculiar natures, rather than as general necessary truths. | |
From: Alan McMichael (The Epistemology of Essentialist Claims [1986], Intro) | |
A reaction: [compressed] This is a modern commentator caught between two views. The idea that essence is the non-trivial-necessary properties is standard, but adding their 'peculiar natures' connects him to Aristotle, and Kit Fine's later papers. Good! |
14640 | Maybe essential properties have to be intrinsic, as well as necessary? [McMichael] |
Full Idea: There is a tendency to think of essential properties as having some characteristic in addition to their necessity, such as intrinsicality. | |
From: Alan McMichael (The Epistemology of Essentialist Claims [1986], VIII) | |
A reaction: Personally I am inclined to take this view of all properties, and not just the 'essential' ones. General necessities, relations, categorisations, disjunctions etc. should not be called 'properties', even if they are 'predicates'. Huge confusion results. |
14638 | Essentialism is false, because it implies the existence of necessary singular propositions [McMichael] |
Full Idea: Essentialism entails the existence of necessary singular propositions that are not instances of necessary generalizations. Therefore, since there are no such propositions, essentialism is false. | |
From: Alan McMichael (The Epistemology of Essentialist Claims [1986], I) | |
A reaction: This summarises the attack which McMichael wishes to deal with. I am wickedly tempted to say that essences actually have a contingent existence (or a merely hypothetical dependent necessity), and this objection might be grist for my mill. |
17722 | The concept 'red' is tied to what actually individuates red things [Peacocke] |
Full Idea: The possession conditions for the concept 'red' of the colour red are tied to those very conditions which individuate the colour red. | |
From: Christopher Peacocke (Explaining the A Priori [2000], p.267), quoted by Carrie Jenkins - Grounding Concepts 2.5 | |
A reaction: Jenkins reports that he therefore argues that we can learn something about the word 'red' from thinking about the concept 'red', which is his new theory of the a priori. I find 'possession conditions' and 'individuation' to be very woolly concepts. |
12702 | Causes can be inferred from perfect knowledge of their effects [Leibniz] |
Full Idea: Whoever understands some effect perfectly will also arrive at the knowledge of its cause. | |
From: Gottfried Leibniz (Meditatio de principio individui [1676], A6.3.490), quoted by Daniel Garber - Leibniz:Body,Substance,Monad 2 | |
A reaction: This sounds highly improbable, given that you would have thought that there could be lots of ways to bring about the same effect. Predicting effects is rather more plausible. I suppose if you can record all the ripples in the pond before they fade... |
14639 | Individuals enter into laws only through their general qualities and relations [McMichael] |
Full Idea: Individuals appear to enter into laws only through their general qualities and relations. | |
From: Alan McMichael (The Epistemology of Essentialist Claims [1986], VIII) | |
A reaction: This is a very significant chicken-or-egg issue. The remark seems to offer the vision of pre-existing general laws, which individuals then join (like joining a club). But surely the laws are derived from the individuals? Where else could they come from? |