86 ideas
22223 | Being-in-the-world is projection to possibilities, thrownness among them, and fallenness within them [Heidegger, by Caputo] |
Full Idea: Being-in-the-world is a phenomenon of 'care' with a tripartite structure: a) projection towards its possibilities, b) thrownness among those possibilities, so Dasein is not free, and c) fallenness among worldly possibilities, to neglect of its own. | |
From: report of Martin Heidegger (Being and Time [1927]) by John D. Caputo - Heidegger p.227 | |
A reaction: Sounds a bit Californian to me. Just living among the world's possibilities is evidently a bad thing, because you could be concentrating on yourself and your own development instead? |
22158 | Pheomenology seeks things themselves, without empty theories, problems and concepts [Heidegger] |
Full Idea: 'Phenomenology' can be formulated as 'To the things themselves!' It is opposed to all free-floating constructions and accidental findings, and to conceptions which only seem to have been demonstrated. It is opposed to traditiona' pseudo-problems. | |
From: Martin Heidegger (Being and Time [1927], Intro II.07) | |
A reaction: It sounds as if we are invited to look at the world the way a dog might look at it. I am not at all clear what it to be gained from this approach. |
15574 | 'Logos' really means 'making something manifest' [Heidegger, by Polt] |
Full Idea: Heidegger concludes that 'logos' essentially means 'making something manifest'. | |
From: report of Martin Heidegger (Being and Time [1927], 56/33) by Richard Polt - Heidegger: an introduction 3.§7 | |
A reaction: It would at least seem to involve revealing the truth of something, though truth doesn't seem to be central to Heidegger's thought. 'Logos' is often translated as 'an account', as well as a 'reason', so Heidegger may be right. |
15569 | Heidegger says truth is historical, and never absolute [Heidegger, by Polt] |
Full Idea: Heidegger is a relentless enemy of ahistorical, absolutist concepts of truth. | |
From: report of Martin Heidegger (Being and Time [1927]) by Richard Polt - Heidegger: an introduction 1 | |
A reaction: I presume that if truth is not absolute then it must be relative, but Polt is a little coy about saying so. For me, anyone who says truth is relative doesn't understand the concept, and is talking about something else. |
18395 | Sets are mereological sums of the singletons of their members [Lewis, by Armstrong] |
Full Idea: Lewis pointed out that many-membered classes are nothing more than the mereological wholes of the classes formed by taking the singleton of each member. | |
From: report of David Lewis (Parts of Classes [1991]) by David M. Armstrong - Truth and Truthmakers 09.4 | |
A reaction: You can't combine members to make the class, because the whole and the parts are of different type, but here the parts and whole are both sets, so they combine like waterdrops. |
15496 | We can build set theory on singletons: classes are then fusions of subclasses, membership is the singleton [Lewis] |
Full Idea: The notion of a singleton, or unit set, can serve as the distinctive primitive of set theory. The rest is mereology: a class is the fusion of its singleton subclasses, something is a member of a class iff its singleton is part of that class. | |
From: David Lewis (Parts of Classes [1991], Pref) | |
A reaction: This is a gloriously bold proposal which I immediately like, because it cuts out the baffling empty set (which many people think 'exists'!), and gets mathematics back to being about the real world of entities (as the Greeks thought). |
15500 | Classes divide into subclasses in many ways, but into members in only one way [Lewis] |
Full Idea: A class divides exhaustively into subclasses in many different ways; whereas a class divides exhaustively into members in only one way. | |
From: David Lewis (Parts of Classes [1991], 1.2) |
15499 | A subclass of a subclass is itself a subclass; a member of a member is not in general a member [Lewis] |
Full Idea: Just as a part of a part is itself a part, so a subclass of a subclass is itself a subclass; whereas a member of a member is not in general a member. | |
From: David Lewis (Parts of Classes [1991], 1.2) | |
A reaction: Lewis is showing the mereological character of sets, but this is a key distinction in basic set theory. When the members of members are themselves members, the set is said to be 'transitive'. |
15498 | We can accept the null set, but there is no null class of anything [Lewis] |
Full Idea: There is no such class as the null class. I don't mind calling some memberless thing - some individual - the null 'set'. But that doesn't make it a memberless class. | |
From: David Lewis (Parts of Classes [1991], 1.2) | |
A reaction: The point is that set theory is a formal system which can do what it likes, but classes are classes 'of' things. Everyone assumes that sets are classes, reserving 'proper classes' for the tricky cases up at the far end. |
15502 | There are four main reasons for asserting that there is an empty set [Lewis] |
Full Idea: The null set is a denotation of last resort for class-terms that fail to denote classes, an intersection of x and y where they have no members in common, the class of all self-members, and the real numbers such that x^2+1=0. This is all mere convenience. | |
From: David Lewis (Parts of Classes [1991], 1.4) | |
A reaction: A helpful catalogue of main motivations for the existence of the null set in set theory. Lewis aims to undermine these reasons, and dispense with the wretched thing. |
15503 | We needn't accept this speck of nothingness, this black hole in the fabric of Reality! [Lewis] |
Full Idea: Must we accept the null set as a most extraordinary individual, a little speck of sheer nothingness, a sort of black hole in the fabric of Reality itself? Not really. | |
From: David Lewis (Parts of Classes [1991], 1.4) | |
A reaction: We can only dream of reaching the level of confidence that Lewis reached, to make such beautiful fun of a highly counterintuitive idea that is rooted in the modern techniques of philosophy. |
15497 | We can replace the membership relation with the member-singleton relation (plus mereology) [Lewis] |
Full Idea: Given the theory of part and whole, the member-singleton relation may replace membership generally as the primitive notion of set theory. | |
From: David Lewis (Parts of Classes [1991], Pref) | |
A reaction: An obvious question is to ask what the member-singleton relation is if it isn't membership. |
15506 | If we don't understand the singleton, then we don't understand classes [Lewis] |
Full Idea: Our utter ignorance about the nature of the singletons amounts to sheer ignorance about the nature of classes generally. | |
From: David Lewis (Parts of Classes [1991], 2.1) |
15511 | If singleton membership is external, why is an object a member of one rather than another? [Lewis] |
Full Idea: Suppose the relation of member to singleton is external. Why must Possum be a member of one singleton rather than another? Why isn't it contingent which singleton is his? | |
From: David Lewis (Parts of Classes [1991], 2.2) | |
A reaction: He cites Van Inwagen for raising this question, and answers it in terms of counterparts. So is the relation internal or external? I think of sets as pairs of curly brackets, not existing entities, so the question doesn't bother me. |
15513 | Maybe singletons have a structure, of a thing and a lasso? [Lewis] |
Full Idea: Maybe the singleton of something x is not an atom, but consists of x plus a lasso. That gives a singleton an internal structure. ...But what do we know of the nature of the lasso, or how it fits? We are no better off. | |
From: David Lewis (Parts of Classes [1991], 2.5) | |
A reaction: [second bit on p.45] |
15507 | Set theory has some unofficial axioms, generalisations about how to understand it [Lewis] |
Full Idea: Set theory has its unofficial axioms, traditional remarks about the nature of classes. They are never argued, but are passed heedlessly from one author to another. One of these says that the classes are nowhere: they are outside space and time. | |
From: David Lewis (Parts of Classes [1991], 2.1) | |
A reaction: Why don't the people who write formal books on set theory ever say things like this? |
10191 | Set theory reduces to a mereological theory with singletons as the only atoms [Lewis, by MacBride] |
Full Idea: Lewis has shown that set theory may be reduced to a mereological theory in which singletons are the only atoms. | |
From: report of David Lewis (Parts of Classes [1991]) by Fraser MacBride - Review of Chihara's 'Structural Acc of Maths' p.80 | |
A reaction: Presumably the axiom of extensionality, that a set is no more than its members, translates into unrestricted composition, that any parts will make an object. Difficult territory, but I suspect that this is of great importance in metaphysics. |
15508 | If singletons are where their members are, then so are all sets [Lewis] |
Full Idea: If every singleton was where its member was, then, in general, classes would be where there members were. | |
From: David Lewis (Parts of Classes [1991], 2.1) | |
A reaction: There seems to be a big dislocation of understanding of the nature of sets, between 'pure' set theory, and set theory with ur-elements. I take the pure to be just an 'abstraction' from the more located one. The empty set has a puzzling location. |
15514 | A huge part of Reality is only accepted as existing if you have accepted set theory [Lewis] |
Full Idea: The preponderant part of Reality must consist of unfamiliar, unobserved things, whose existence would have gone unsuspected but for our acceptance of set theory. | |
From: David Lewis (Parts of Classes [1991], 2.6) | |
A reaction: He is referring to the enormous sets at the far end of set theory, of a size that had never been hitherto conceived. Excellent. Daft to believe in something entirely because you have accepted set theory, with no other basis. |
15523 | Set theory isn't innocent; it generates infinities from a single thing; but mathematics needs it [Lewis] |
Full Idea: Set theory is not innocent. Its trouble is that when we have one thing, then somehow we have another wholly distinct thing, the singleton. And another, and another....ad infinitum. But that's the price for mathematical power. Pay it. | |
From: David Lewis (Parts of Classes [1991], 3.6) |
15525 | Plural quantification lacks a complete axiom system [Lewis] |
Full Idea: There is an irremediable lack of a complete axiom system for plural quantification. | |
From: David Lewis (Parts of Classes [1991], 4.7) |
15518 | I like plural quantification, but am not convinced of its connection with second-order logic [Lewis] |
Full Idea: I agree fully with Boolos on substantive questions about plural quantification, though I would make less than he does of the connection with second-order logic. | |
From: David Lewis (Parts of Classes [1991], 3.2 n2) | |
A reaction: Deep matters, but my inclination is to agree with Lewis, as I have never been able to see why talk of plural quantification led straight on to second-order logic. A plural is just some objects, not some higher-order entity. |
15524 | Zermelo's model of arithmetic is distinctive because it rests on a primitive of set theory [Lewis] |
Full Idea: What sets Zermelo's modelling of arithmetic apart from von Neumann's and all the rest is that he identifies the primitive of arithmetic with an appropriately primitive notion of set theory. | |
From: David Lewis (Parts of Classes [1991], 4.6) | |
A reaction: Zermelo's model is just endlessly nested empty sets, which is a very simple structure. I gather that connoisseurs seem to prefer von Neumann's model (where each number contains its predecessor number). |
15517 | Giving up classes means giving up successful mathematics because of dubious philosophy [Lewis] |
Full Idea: Renouncing classes means rejecting mathematics. That will not do. Mathematics is an established, going concern. Philosophy is as shaky as can be. | |
From: David Lewis (Parts of Classes [1991], 2.8) | |
A reaction: This culminates in his famous 'Who's going to tell the mathematicians? Not me!'. He has just given four examples of mathematics that seems to entirely depend on classes. This idea sounds like G.E. Moore's common sense against scepticism. |
15515 | To be a structuralist, you quantify over relations [Lewis] |
Full Idea: To be a structuralist, you quantify over relations. | |
From: David Lewis (Parts of Classes [1991], 2.6) |
15520 | Existence doesn't come in degrees; once asserted, it can't then be qualified [Lewis] |
Full Idea: Existence cannot be a matter of degree. If you say there is something that exists to a diminished degree, once you've said 'there is' your game is up. | |
From: David Lewis (Parts of Classes [1991], 3.5) | |
A reaction: You might have thought that this was so obvious as to be not worth saying, but as far as I can see it is a minority view in contemporary philosophy. It was Quine's view, and it is mine. |
21897 | Reducing being to the study of beings too readily accepts the modern scientific view [Heidegger, by May] |
Full Idea: Continental philosophers, following Heidegger, see in the attempt to reduce the question of being to that of beings a symptom of an age that is too ready to accept the terms in which science conceives the world. | |
From: report of Martin Heidegger (Being and Time [1927]) by Todd May - Gilles Deleuze 1.04 | |
A reaction: Interesting. I take the idea that this is a failing of the modern age to be ridiculous, since I take it to be the key metaphysical move made by Aristotle. Neverthless, Aristotle is closely in tune with modern science. For 'beings', read 'objects'. |
15573 | For us, Being is constituted by awareness of other sorts of Being [Heidegger] |
Full Idea: We are Dasein - the entity who possesses - as constitutive for its understanding of existence - an understanding of the Being of all entities of a character other than its own. | |
From: Martin Heidegger (Being and Time [1927], 34/13), quoted by Richard Polt - Heidegger: an introduction 3.§4 | |
A reaction: This seems to connect to the emerging 'externalist' view of mind that comes with the external view of content coming from Purnam's Twin Earth idea. |
9273 | Heidegger turns to 'Being' to affirm the uniqueness of humans in the world [Heidegger, by Gray] |
Full Idea: Heidegger turns to 'Being' for the same reason that Christians turn to God - to affirm the unique place of humans in the world. | |
From: report of Martin Heidegger (Being and Time [1927]) by John Gray - Straw Dogs 2.4 | |
A reaction: This is the first remark I have encountered that makes sense of Heidegger's Being to me! It places Heidegger as a modernist philosopher, trying to grapple with the decline of religion. I'll stick with Bertrand Russell on that. |
22157 | Dasein is a mode of Being distinguished by concern for its own Being [Heidegger] |
Full Idea: Dasein is an entity which does not just occur among other entities. Rather it is ontically distinguished by the fact that, in its very Being, that Being is an issue for it. | |
From: Martin Heidegger (Being and Time [1927], Intro I.04) | |
A reaction: How do you distinguish the Being of normal humans from the Being of someone in a deep coma, who has no existential issues? Has that Dasein ceased to be? Why does angst create a new mode of Being, but flying doesn't? |
8137 | Dasein is ahead of itself in the world, and alongside encountered entities [Heidegger] |
Full Idea: The formal existential totality of Dasein's ontological structural whole is: the Being of Dasein means ahead-of-itself-Being-already-in-(the-world) as Being-alongside (entities encountered within-the-world). | |
From: Martin Heidegger (Being and Time [1927], I.6 41) | |
A reaction: If you find that thought really illuminating, you are probably on the wrong website. However, the thought that we exist 'ahead of ourselves' might be a fruitful line for existentialists to explore. |
21951 | In company with others one's Dasein dissolves, and even the others themselves dissolve [Heidegger] |
Full Idea: This being-with-one-another dissolves one's own Dasein completely into the kind of being of 'the others', in such a way, indeed, that the others, as distinguishable and explicit, vanish more and more. | |
From: Martin Heidegger (Being and Time [1927], p.164), quoted by Mark Wrathall - Heidegger: how to read 5 | |
A reaction: He seems to be describing the psychology of someone who joins a small crowd which gradually increases in size. I take this relation to others to be the basic existential dilemma, of retaining individual authenticity within a community. |
20745 | 'Dasein' expresses not 'what' the entity is, but its being [Heidegger] |
Full Idea: When we designate this entity with the term 'Dasein' we are expressing not its 'what' (as if it were a table, house, or tree) but its being. | |
From: Martin Heidegger (Being and Time [1927], p.297), quoted by Kevin Aho - Existentialism: an introduction 2 'Phenomenology' | |
A reaction: Presumably analytic discussions of persons try to be too objective. Heidegger is trying to capture the thought at the heart of Kierkegaard's existentialism. Objectivity and subjectivity are never in conflict. Is there really a different mode of existence? |
8134 | The word 'dasein' is used to mean 'the manner of Being which man possesses', and also the human creature [Heidegger, by Cooper,DE] |
Full Idea: Heidegger borrows a common German word 'dasein', meaning 'being' or 'existence', to refer both to 'the manner of Being which... man... possesses', and to the creature which possesses it. | |
From: report of Martin Heidegger (Being and Time [1927], p.32) by David E. Cooper - Heidegger Ch.3 | |
A reaction: This just strikes me as an elementary ontological mistake. Because something has startling properties it doesn't follow that we have a different type of Being. Magnets don't have a different type of being from ordinary iron. |
8135 | 'Dasein' is Being which is laid claim to, and which matters to its owner [Heidegger, by Cooper,DE] |
Full Idea: We each of us not only have Dasein (our kind of Being), but we can lay claim to it. Also the Dasein of a thing 'is an issue for it' - we care about the kinds of creatures we can make ourselves into. | |
From: report of Martin Heidegger (Being and Time [1927], p.67) by David E. Cooper - Heidegger Ch.3 | |
A reaction: Heidegger says other more puzzling things about Dasein. The second half of the idea is what makes Heidegger an existentialist, and an inspiration for Sartre. |
21948 | Dasein is being which can understand itself, and possess itself in a way allowing authenticity [Heidegger] |
Full Idea: Dasein is an entity which, in its very being, comports itself understandingly towards that being. ...Mineness belongs to an existent Dasein, and belongs to it as the condition which makes authenticity and inauthenticity possible. | |
From: Martin Heidegger (Being and Time [1927], p.78), quoted by Mark Wrathall - Heidegger: how to read 1 | |
A reaction: He might eventually persuade me that Dasein is so different from mere material being that it deserves a category of its own. But a reductive account of mind is also a reductive account of being. |
7680 | Ontology is possible only as phenomenology [Heidegger] |
Full Idea: Ontology is possible only as phenomenology. | |
From: Martin Heidegger (Being and Time [1927], p.31), quoted by Dale Jacquette - Ontology Ch.1 | |
A reaction: Jacquette argues against this claim. The idea seems to be the ultimate extension of Kant, and it is not a big move to say that the only real phenomenology we can discuss is our semantics. Wrong, wrong, wrong. |
15504 | Atomless gunk is an individual whose parts all have further proper parts [Lewis] |
Full Idea: A blob can represent atomless gunk: an individual whose parts all have further proper parts. | |
From: David Lewis (Parts of Classes [1991], 1.8) | |
A reaction: This is not the same as 'stuff', since gunk is a precise fusion of all those parts, whereas there is no such precision about stuff. Stuff is neutral as to whether it has atoms, or is endlessly divisible. My love of stuff grows. Laycock is a hero. |
15501 | We have no idea of a third sort of thing, that isn't an individual, a class, or their mixture [Lewis] |
Full Idea: As yet we have no idea of any third sort of thing that is neither individual nor class nor mixture of the two. | |
From: David Lewis (Parts of Classes [1991], 1.2) | |
A reaction: You can see that Lewis was a pupil of Quine. I quote this to show how little impression 'stuff' makes on the modern radar. His defence is that stuff may not be a 'thing', but then he seems to think that 'things' exhaust reality (top p.8 and 9). |
22161 | Readiness-to-hand defines things in themselves ontologically [Heidegger] |
Full Idea: Readiness-to-hand is the way in which entities as they are 'in themselves' are defined ontologico-categorially. | |
From: Martin Heidegger (Being and Time [1927], I.3.15) | |
A reaction: I assume this is a direct reference to the problem idealists had with the thing-in-itself. It seems that the reality of a thing consists of the strengthened relationship it has with Dasein, which sounds fairly idealist to me. |
12056 | An ancestral relation is either direct or transitively indirect [Wiggins] |
Full Idea: x bears to y the 'ancestral' of the relation R just if either x bears R to y, or x bears R to some w that bears R to y, or x bears R to some w that bears R to some z that bears R to y, or..... | |
From: David Wiggins (Substance [1995], 4.10.1) | |
A reaction: A concept invented by Frege (1879). |
15516 | A property is any class of possibilia [Lewis] |
Full Idea: A property is any class of possibilia. | |
From: David Lewis (Parts of Classes [1991], 2.7) |
12050 | Substances contain a source of change or principle of activity [Wiggins] |
Full Idea: Substances are things that have a source of change or principle of activity within them. | |
From: David Wiggins (Substance [1995], 4.4.1) | |
A reaction: A vey significant concession. I think we can talk of 'essences' and 'powers', and drop talk of 'substances'. 'Powers' is a much better word, because it immediately pushes the active ingredient to the forefront. |
12052 | We never single out just 'this', but always 'this something-or-other' [Wiggins] |
Full Idea: What is singled out is never a bare this or that, but this or that something or other. | |
From: David Wiggins (Substance [1995], 4.5.1) | |
A reaction: I like, in ontological speculation, to contemplate the problem of the baffling archaeological find. 'This thing I have dug up - what the hell IS it?'. Wiggins is contemptuous of the term 'thisness', and the idea of bare particulars. |
12055 | Sortal predications are answers to the question 'what is x?' [Wiggins] |
Full Idea: Predications which answer the question 'what is x?' are often called 'sortal predications' in present-day philosophy. | |
From: David Wiggins (Substance [1995], 4.10.1) | |
A reaction: The word 'sortal' comes from Locke. Wiggins is the guru of 'sortal essentialism'. I just can't believe that in answer to the question 'what really is David Wiggins?' that he would be happy with a sequence of categorisations. |
12059 | A river may change constantly, but not in respect of being a river [Wiggins] |
Full Idea: To say that the river is changing constantly in every respect is not to say that it is changing in respect of being a river. | |
From: David Wiggins (Substance [1995], 4.11.2) | |
A reaction: Can't a river become a lake, or a mere stream? Wiggins's proposal does not help with the problem of a river which sometimes dries up (as my local river sometimes does). At what point do we decide it is no longer a river? |
12063 | Sortal classification becomes science, with cross reference clarifying individuals [Wiggins] |
Full Idea: The sense of the sortal term under which we pick out an individual expands into the scientific account of things of that kind, where the account clarifies what is at issue in questions of sameness and difference of specimens of that kind. | |
From: David Wiggins (Substance [1995], 4.13.1) | |
A reaction: This is how the sortal approach is supposed to deal with individuals. So the placid tiger reveals much by falling under 'tiger', and a crucial extra bit by falling under 'placid'. See Idea 12053 for problems with this proposal. |
12051 | If the kinds are divided realistically, they fall into substances [Wiggins] |
Full Idea: Substance are what the world is articulated into when the segments of kinds corresponds to the real divisions in reality. | |
From: David Wiggins (Substance [1995], 4.5.1) | |
A reaction: This is very helpful in clarifying Wiggins's very obscurely expressed views. He appears to be saying that if we divide the sheep from the goats correctly, we reveal sheep-substance and goat-substance (one substance per species). Crazy! |
12053 | 'Human being' is a better answer to 'what is it?' than 'poet', as the latter comes in degrees [Wiggins] |
Full Idea: One person can be more or less of a poet than another, so 'poet' is not a conclusory answer to the question 'What is it that is singled out here?' 'Poet' rides on the back of the answer 'human being'. | |
From: David Wiggins (Substance [1995], 4.5.1) | |
A reaction: So apparently one must assign a natural kind, and not just a class. Wiggins lacks science fiction imagination. In the genetic salad of the far future, being a poet may be more definitive than being a human being. See Idea 12063. |
12054 | Secondary substances correctly divide primary substances by activity-principles and relations [Wiggins] |
Full Idea: A system of secondary substances with a claim to separate reality into its genuine primary substances must arise from an understanding of a set of principles of activity on the basis of which identities can be glossed in terms of determinate relations. | |
From: David Wiggins (Substance [1995], 4.5.1) | |
A reaction: I translate this as saying that individual essences are categorised according to principles which explain behaviour and relations. I'm increasingly bewildered by the 'secondary substances' Wiggins got from 'Categories', and loves so much. |
12047 | We refer to persisting substances, in perception and in thought, and they aid understanding [Wiggins] |
Full Idea: A substance is a persisting and somehow basic object of reference that is there to be discovered in perception and thought, an object whose claim to be recognized as a real entity is a claim on our aspirations to understand the world. | |
From: David Wiggins (Substance [1995], 4.1) | |
A reaction: A lot of components are assigned by Wiggins to the concept, and the tricky job, inititiated by Aristotle, is to fit all the pieces together nicely. Personally I am wondering if the acceptance of 'essences' implies dropping 'substances'. |
12057 | Matter underlies things, composes things, and brings them to be [Wiggins] |
Full Idea: Matter ex hypothesi is what ultimately underlies (to huperkeimenon) a thing; it is that from which something comes to be and which remains as a non-coincidental component in the thing's make-up. | |
From: David Wiggins (Substance [1995], 192a30) | |
A reaction: This is an interesting prelude to the much more comprehensive discussion of matter in Metaphysics, where he crucially adds the notion of 'form', and gives it priority over the underlying matter. |
14748 | The many are many and the one is one, so they can't be identical [Lewis] |
Full Idea: What is true of the many is not exactly what is true of the one. After all they are many while it is one. The number of the many is six, whereas the number of the fusion is one. The singletons of the many are distinct from the singleton of the one. | |
From: David Lewis (Parts of Classes [1991], 3.6) | |
A reaction: I wouldn't take this objection to be conclusive. 'Some pebbles' seem to be many, but a 'handful of pebbles' seem to be one, where the physical situation might be identical. If they are not identical, then the non-identity is purely conceptual. |
6129 | Lewis affirms 'composition as identity' - that an object is no more than its parts [Lewis, by Merricks] |
Full Idea: Lewis says that the parts of a thing are identical with the whole they compose, calling his view 'composition as identity', which is the claim that a physical object is 'nothing over and above its parts'. | |
From: report of David Lewis (Parts of Classes [1991], p.84-7) by Trenton Merricks - Objects and Persons §I.IV | |
A reaction: The ontological economy of this view is obviously attractive, but I don't agree with it. You certainly can't say that all identity consists entirely of composition by parts, because the parts need identity to get the view off the ground. |
15512 | In mereology no two things consist of the same atoms [Lewis] |
Full Idea: It is a principle of mereology that no two things consist of exactly the same atoms. | |
From: David Lewis (Parts of Classes [1991], 2.3) | |
A reaction: The problem with this is screamingly obvious - that the same atoms might differ in structure. Lewis did refer to this problem, but seems to try to wriggle out of it, in Idea 15444. |
15519 | Trout-turkeys exist, despite lacking cohesion, natural joints and united causal power [Lewis] |
Full Idea: A trout-turkey is inhomogeneous, disconnected, not in contrast with its surroundings. It is not cohesive, not causally integrated, not a causal unit in its impact on the rest of the world. It is not carved at the joints. That doesn't affect its existence. | |
From: David Lewis (Parts of Classes [1991], 3.5) | |
A reaction: A nice pre-emptive strike against all the reasons why anyone might think more is needed for unity than a mereological fusion. |
15521 | Given cats, a fusion of cats adds nothing further to reality [Lewis] |
Full Idea: Given a prior commitment to cats, a commitment to cat-fusions is not a further commitment. The fusion is nothing over and above the cats that compose it. It just is them. They just are it. Together or separately, the cats are the same portion of Reality. | |
From: David Lewis (Parts of Classes [1991], 3.6) | |
A reaction: The two extremes of ontology are that there are no objects, or that every combination is an object. Until reading this I thought Lewis was in the second camp, but this sounds like object-nihilism, as in Van Inwagen and Merricks. |
15522 | The one has different truths from the many; it is one rather than many, one rather than six [Lewis] |
Full Idea: What's true of the many is not exactly what's true of the one. After all they are many while it is one. The number of the many is six, whereas the number of the fusion is one. | |
From: David Lewis (Parts of Classes [1991], 3.6) | |
A reaction: Together with Idea 15521, this nicely illustrates the gulf between commitment to ontology and commitment to truths. The truths about a fusion change, while its ontology remains the same. Possibly this is the key to all of metaphysics. |
10566 | Lewis prefers giving up singletons to giving up sums [Lewis, by Fine,K] |
Full Idea: In the face of the conflict between mereology and set theory, Lewis has advocated giving up the existence of singletons rather than sums. | |
From: report of David Lewis (Parts of Classes [1991]) by Kit Fine - Replies on 'Limits of Abstraction' 1 |
14244 | Lewis only uses fusions to create unities, but fusions notoriously flatten our distinctions [Oliver/Smiley on Lewis] |
Full Idea: Lewis employs mereological fusion as his sole method of making one thing out of many, and fusion is notorious for the way it flattens out and thereby obliterates distinctions. | |
From: comment on David Lewis (Parts of Classes [1991]) by Oliver,A/Smiley,T - What are Sets and What are they For? 3.1 | |
A reaction: I take this to be a key point in the discussion of mereology in ontological contexts. As a defender of intrinsic structural essences, I have no use for mereological fusions, and look for a quite different identity for 'wholes'. |
10660 | A commitment to cat-fusions is not a further commitment; it is them and they are it [Lewis] |
Full Idea: Given a prior commitment to cats, a commitment to cat-fusions is not a further commitment. The fusion is nothing over and above the cats that compose it. It just is them. They just are it. | |
From: David Lewis (Parts of Classes [1991], p.81), quoted by Achille Varzi - Mereology 4.3 | |
A reaction: I take this to make Lewis a nominalist, saying the same thing that Goodman said about Utah in Idea 10657. Any commitment to cat-fusions being more than the cats, or Utah being more than its counties, strikes me as crazy. |
15576 | Heidegger seeks a non-traditional concept of essence as 'essential unfolding' [Heidegger, by Polt] |
Full Idea: Heidegger tries to develop a non-traditional concept of essence as 'essential unfolding' ('wesen' as a verb). | |
From: report of Martin Heidegger (Being and Time [1927], I.4.27) by Richard Polt - Heidegger: an introduction 3.§25-7 |
15578 | Propositions don't provide understanding, because the understanding must come first [Heidegger, by Polt] |
Full Idea: Propositions are not a good clue to the essence of understanding, because we must already understand things before we formulate propositions about them. | |
From: report of Martin Heidegger (Being and Time [1927], I.5.31) by Richard Polt - Heidegger: an introduction 3.§31-3 | |
A reaction: I like this, because I think the most important aspects of our thought and understanding are entirely non-verbal - even in cases where they seem to be highly specific and verbal. We don't understand ourselves at all! |
22159 | If we posit 'I' as the starting point, we miss the mind's phenomenal content [Heidegger] |
Full Idea: One of our first tasks will be to prove that if we posit an 'I' or subject as that which is proximally given, we shall completely miss the phenomenal content of Dasein. | |
From: Martin Heidegger (Being and Time [1927], I.1.10) | |
A reaction: Descartes had thrown doubt on the informativeness of the phenomena, so presumably your phenomenologist is not interested in whether they reveal any truth. So why are unreliable phenomena of any interest? |
22160 | Our relationship to a hammer strengthens when we use [Heidegger] |
Full Idea: The less we stare at the hammer-Thing, and the more we seize hold of it and use it, the more primordial does our relationship to it become. ...The kind of Being which equipment possesses... we call 'readiness-to-hand' [Zuhandenheit]. | |
From: Martin Heidegger (Being and Time [1927], I.3.15) | |
A reaction: This example would be well at home in the writings of the pragmatists. It is also an important example for existentialists. In analytic philosophy we might say the experience combines perception with direct exerience of causation. |
15509 | Some say qualities are parts of things - as repeatable universals, or as particulars [Lewis] |
Full Idea: Some philosophers propose that things have their qualities by having them as parts, either as repeatable universals (Goodman), or as particulars (Donald Williams). | |
From: David Lewis (Parts of Classes [1991], 2.1 n2) | |
A reaction: He refers to 'qualities' rather than 'properties', presumably because this view makes them all intrinsic to the object. Is being 'handsome' a part of a person? |
15580 | There are no raw sense-data - our experiences are of the sound or colour of something [Heidegger] |
Full Idea: We always take a noise as the sound of something; we always take a hue as the color of something. We simply do not experience raw, uninterpreted sense-data - these are the inventions of philosophers. | |
From: Martin Heidegger (Being and Time [1927], 207/163-4), quoted by Richard Polt - Heidegger: an introduction 3.§31-3 | |
A reaction: This is something like the modern view of sense-data as promoted by John McDowell, rather than the experiential atoms of Russell and Moore. Experience is holistic, but that doesn't mean we can't analyse it into components. |
20749 | Perceived objects always appear in a context [Heidegger] |
Full Idea: The perceptual 'something' is always in the middle of something else, it always forms part of a 'field'. | |
From: Martin Heidegger (Being and Time [1927], p.4), quoted by Kevin Aho - Existentialism: an introduction 3 'Perceptual' | |
A reaction: Sounds like our knowledge of electrons. Nice point. Standard analytic discussions of perceiving a glass always treat it in isolation, when it is on an expensive table near a brandy bottle. Or near a hammer. |
22163 | The scandal of philosophy is expecting to prove reality when the prover's Being is vague [Heidegger] |
Full Idea: The 'scandal of philosophy' is not that this proof [of external things] has yet to be given, but that such proofs are expected and attempted again and again. ...The kind of Being of the entity which does the proving has not been made definite enough. | |
From: Martin Heidegger (Being and Time [1927], I.6.43a) | |
A reaction: The 'scandal' was a remark of Kant's. Presumably Heidegger's exploration of Dasein aims to establish the Being of the prover sufficiently to solve this problem (via phenomenology). |
12064 | The category of substance is more important for epistemology than for ontology [Wiggins] |
Full Idea: For us the importance of the category of substance, if it has any importance, is not so much ontological as relative to our epistemological circumstances and the conditions under which we have to undertake inquiry. | |
From: David Wiggins (Substance [1995], 4.13.2) | |
A reaction: This seems to be a rather significant concession. Wiggins has revived the notion of substance in recent times, but he is not quite adding it to the furniture of the world. Personally I increasingly think we can dump it, in ontology and epistemology. |
12049 | Naming the secondary substance provides a mass of general information [Wiggins] |
Full Idea: Answering 'what is it?' with the secondary substance identifies an object with a class of continuants which survive certain changes, come into being in certain ways, are qualified in certain ways, behave in certain ways, and cease to be in certain ways. | |
From: David Wiggins (Substance [1995], 4.3.3) | |
A reaction: Thus the priority of this sort of answer is that a huge range of explanations immediately flow from it. I take the explanation to be prior, and the primary substance to be prior, since secondary substance is inductively derived from it. |
21949 | Having thoughts and feelings need engagement in the world [Heidegger, by Wrathall] |
Full Idea: Heidegger argues that having thoughts and feelings is only possible for entity that is actually engaged in the world. | |
From: report of Martin Heidegger (Being and Time [1927]) by Mark Wrathall - Heidegger: how to read 1 | |
A reaction: This seems to be an a priori exclusion of the possibility of a brain in a vat. I guess the ancestor of this idea is Schopenhauer. |
22222 | Dasein finds itself already amongst others [Heidegger, by Caputo] |
Full Idea: The world is a world shared with others, so that far from being a solipsistic ego ...Dasein finds itself already amongst others. | |
From: report of Martin Heidegger (Being and Time [1927]) by John D. Caputo - Heidegger p.226 | |
A reaction: Phenomenologists don't seem bothered about the problem of knowing other minds. If you take something for granted, it ceases to be a problem to be solved! |
8136 | If we work and play with other people, they are bound to be 'Dasein', intelligent agents [Heidegger, by Cooper,DE] |
Full Idea: How do I know that other people have minds? The question is a bad one. Precisely because I encounter them at work, play and the like, it is guaranteed that they, too, are Dasein, intelligent agents. | |
From: report of Martin Heidegger (Being and Time [1927], p.153-) by David E. Cooper - Heidegger Ch.3 | |
A reaction: I've seen film of someone playing peek-a-boo with a bonobo ape, so presumably they have Dasein. It might be easier for the AI community to aim at building a robot with Dasein, than one which was simply conscious. |
22164 | When Dasein grasps something it exists externally alongside the thing [Heidegger] |
Full Idea: When Dasein directs itself towards something and grasps it, it does not somehow first get out of an inner sphere in which it has been proximally encapsulated, but its primary kind of Being is such that it is always 'outside' alongside entities. | |
From: Martin Heidegger (Being and Time [1927], I.2.13) | |
A reaction: This is the first plausible fruit of phenomenology I have been able to discover. Analysing the passive mind is not very promising, but seeing what happens when we become more proactive is revealing. |
12065 | Seeing a group of soldiers as an army is irresistible, in ontology and explanation [Wiggins] |
Full Idea: It seems mandatory to an observer of soldiers to give 'the final touch of unity' to their aggregate entity (the army). ...Similar claims arise with the ontological and explanatory claims of other corporate entities. | |
From: David Wiggins (Substance [1995], 4.13.3) | |
A reaction: Wiggins must say (following Leibniz Essays II.xxiv,1) that we add the unity, but I take the view that an army has powers, and hence offers explanations, which are lacking in a merely group of disparate soldiers. So an army has an essence and identity. |
22162 | There is an everyday self, and an authentic self, when it is grasped in its own way [Heidegger] |
Full Idea: The self of everyday Dasein is the they-self [das Man-selbst], which we distinguish from the authentic self - that is, from the Self which has been taken hold of in its own way. | |
From: Martin Heidegger (Being and Time [1927], I.4.27) | |
A reaction: To a novice this sounds like a requirement for increased self-consciousness during daily activity. 'Be a good animal, true to your animal self' said one of Lawrence's characters. |
20114 | Everyone is other, and no one is himself [Heidegger] |
Full Idea: Everyone is other, and no one is himself. | |
From: Martin Heidegger (Being and Time [1927], p.165), quoted by Rüdiger Safranski - Nietzsche: a philosophical biography 09 | |
A reaction: Safranski describes this as the idea of 'structural self-evasion'. He detects the same idea in Nietzsche's 'Daybreak'. |
15577 | Moods are more fundamentally revealing than theories - as when fear reveals a threat [Heidegger, by Polt] |
Full Idea: For Heidegger moods are disclosive; they show us things in a more fundamental way than theoretical propositions ever can. For example, fear reveals something as a threat. | |
From: report of Martin Heidegger (Being and Time [1927], I.5.30) by Richard Polt - Heidegger: an introduction 3.§30 | |
A reaction: Most modern students of emotion seem to agree. Even though they may not have specific content, it is always possible to consider the underlying cause of the mood. |
20748 | We do not add value to naked things; its involvement is disclosed in understanding it [Heidegger] |
Full Idea: We do not throw a 'signification' over some naked thing which is present-at-hand, we do not stick a value on it; but when something is encountered as such, the thing in question has an involvement which is disclosed in our understanding of the world. | |
From: Martin Heidegger (Being and Time [1927], p.190-1), quoted by George Dickie - The Myth of the Aesthetic Attitude 3 'Undoing' | |
A reaction: Analytic philosophy and science have tried to dismantle experience, and Heidegger wants to put it back together. I would say there is a big difference between encountering a thing (which is a bit facty), and understanding it (which is more valuey). |
22166 | Dasein has the potential to be itself, but must be shown this in the midst of ordinariness [Heidegger] |
Full Idea: Because Dasein is lost in the 'they', it must first find itself. It must be 'shown' to itself in its possible authenticity. In terms of its possibility, Dasein is already a potentiality-for-Being-its-self, but it needs to have this potentiality attested. | |
From: Martin Heidegger (Being and Time [1927], II.2.54) | |
A reaction: I wish there was some criterion for knowing when you are being yourself and when you are not. |
22165 | Anxiety reveals the possibility and individuality of Dasein [Heidegger] |
Full Idea: Anxiety discloses Dasein as Being-possible, and indeed as the only kind of thing which it can be of its own accord as something individualised in individualisation. | |
From: Martin Heidegger (Being and Time [1927], I.6.40) | |
A reaction: Is sounds like insecurity, as a sort of trauma that shocks one into self-realisation. The idea means very little to me personally. |
21952 | Anxiety about death frees me to live my own life [Heidegger, by Wrathall] |
Full Idea: For Heidegger, as a consequence of my anxiety in the face of death, I am set free to live my life as my own rather than doing things merely because others expect me to do them. | |
From: report of Martin Heidegger (Being and Time [1927]) by Mark Wrathall - Heidegger: how to read 7 | |
A reaction: Contrary to Epicurus, Heidegger thinks anxiety about death is a good thing. The point is, I suppose, that we all die alone, and people who are very socially contrained need to face up to death in order to grasp their autonomy. |
22224 | Anxiety is the uncanniness felt when constantly fleeing from asserting one's own freedom [Heidegger, by Caputo] |
Full Idea: Anxiety [angst] is the disturbing sense of uncanniness by which Dasein is overtaken (thrownness) when it discovers there is nothing other than its own freedom to sustain its projects (projection), and from which Dasein constantly takes flight (falling). | |
From: report of Martin Heidegger (Being and Time [1927]) by John D. Caputo - Heidegger p.227 | |
A reaction: This seems to be Kierkegaard's idea, unamended. In my experience anxiety only comes when I am forced into making decisions by worldly situations. An 'existential crisis' is a sort of blankness appearing where a future life was supposed to be. |
15572 | Being what it is (essentia) must be conceived in terms of Being (existence) [Heidegger] |
Full Idea: Dasein's Being-what-it-is (essentia) must….be conceived in terms of its Being (existentia). | |
From: Martin Heidegger (Being and Time [1927], 67/42), quoted by Richard Polt - Heidegger: an introduction 3.§2 | |
A reaction: This seems to be the origin of Sartre's famous slogan 'existence before essence'. It seems to be a rebellion against Husserl's quest for essences. |
20453 | Heidegger says we must either choose an inauthentic hero, or choose yourself as hero [Heidegger, by Critchley] |
Full Idea: Heidegger says you must choose your hero; either you choose 'das Man', the inauthentic life, or you choose yourself - the point being that you have to choose yourself as your hero in order to be authentic. | |
From: report of Martin Heidegger (Being and Time [1927]) by Simon Critchley - Impossible Objects: interviews 5 | |
A reaction: If Nietzsche's 'Ecce Homo' is the model for choosing yourself as hero, I am not too sure about this idea. Needing a hero seems awfully German and romantic. Ein Heldenleben. Be your own anit-hero (like a standup comedian)? |