34 ideas
6575 | Philosophy may never find foundations, and may undermine our lives in the process [Fogelin] |
Full Idea: Not only is traditional philosophy incapable of discovering the foundations it seeks, but the philosophical enterprise may itself dislodge the contingent, de facto supports that our daily life depends upon. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.2) | |
A reaction: In the end Fogelin is not so pessimistic, but he is worried by the concern of philosophers with paradox and contradiction. I don't remotely consider this a reason to reject philosophy, but it might be a reason to keep it sealed off from daily life. |
6585 | Rationality is threatened by fear of inconsistency, illusions of absolutes or relativism, and doubt [Fogelin] |
Full Idea: The three main threats to our rational lives are fear of inconsistency, illusions (of absolutism and relativism) and doubt. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: This is a very nice analysis of the forces that can destroy the philosopher's aspiration to the rational life. Personally I still suffer from a few illusions about the possibility of absolutes, but I may grow out of it. The other three don't bother me. |
6557 | Humans may never be able to attain a world view which is both rich and consistent [Fogelin] |
Full Idea: It might be wholly unreasonable to suppose that human beings will ever be able to attain a view of the world that is both suitably rich and completely consistent. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Intro) | |
A reaction: Fogelin's lectures develop this view very persuasively. I think all philosophers must believe that the gods could attain a 'rich and consistent' view. Our problem is that we are a badly organised team, whose members keep dying. |
6568 | A game can be played, despite having inconsistent rules [Fogelin] |
Full Idea: The presence of an inconsistency in the rules that govern a game need not destroy the game. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.2) | |
A reaction: He only defends this thesis if the inconsistency is away from the main centre of the action. You can't have an inconsistent definition of scoring a goal or a touchdown. |
6560 | The law of noncontradiction is traditionally the most basic principle of rationality [Fogelin] |
Full Idea: Traditionally many philosophers (Aristotle among them) have considered the law of noncontradiction to be the deepest, most fundamental principle of rationality. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.1) | |
A reaction: For Aristotle, see Idea 1601 (and 'Metaphysics' 1005b28). The only denier of the basic character of the law that I know of is Nietzsche (Idea 4531). Fogelin, despite many qualifications, endorses the law, and so do I. |
6565 | The law of noncontradiction makes the distinction between asserting something and denying it [Fogelin] |
Full Idea: People who reject the law of noncontradiction obliterate any significant difference between asserting something and denying it; …this will not move anyone who genuinely opts either for silence or for madness. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.1) | |
A reaction: This seems a sufficiently firm and clear assertion of the basic nature of this law. The only rival view seems to be that of Nietzsche (Idea 4531), but then you wonder how Nietzsche is in a position to assert the relativity of the law. |
6574 | Legal reasoning is analogical, not deductive [Fogelin] |
Full Idea: There is almost universal agreement that legal reasoning is fundamentally analogical, not deductive, in character. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.2) | |
A reaction: This raises the question of whether analogy can be considered as 'reasoning' in itself. How do you compare the examples? Could you compare two examples if you lacked language, or rules, or a scale of values? |
10653 | Maybe set theory need not be well-founded [Varzi] |
Full Idea: There are some proposals for non-well-founded set theory (tolerating cases of self-membership and membership circularities). | |
From: Achille Varzi (Mereology [2003], 2.1) | |
A reaction: [He cites Aczel 1988, and Barwise and Moss 1996] |
13536 | Skolem did not believe in the existence of uncountable sets [Skolem] |
Full Idea: Skolem did not believe in the existence of uncountable sets. | |
From: Thoralf Skolem (works [1920], 5.3) | |
A reaction: Kit Fine refers somewhere to 'unrepentent Skolemites' who still hold this view. |
10648 | Mereology need not be nominalist, though it is often taken to be so [Varzi] |
Full Idea: While mereology was originally offered with a nominalist viewpoint, resulting in a conception of mereology as an ontologically parsimonious alternative to set theory, there is no necessary link between analysis of parthood and nominalism. | |
From: Achille Varzi (Mereology [2003], 1) | |
A reaction: He cites Lesniewski and Leonard-and-Goodman. Do you allow something called a 'whole' into your ontology, as well as the parts? He observes that while 'wholes' can be concrete, they can also be abstract, if the parts are abstract. |
10655 | Are there mereological atoms, and are all objects made of them? [Varzi] |
Full Idea: It is an open question whether there are any mereological atoms (with no proper parts), and also whether every object is ultimately made up of atoms. | |
From: Achille Varzi (Mereology [2003], 3) | |
A reaction: Such a view would have to presuppose (metaphysically) that the divisibility of matter has limits. If one follows this route, then are there only 'natural' wholes, or are we 'unrestricted' in our view of how the atoms combine? I favour the natural route. |
10659 | There is something of which everything is part, but no null-thing which is part of everything [Varzi] |
Full Idea: It is common in mereology to hold that there is something of which everything is part, but few hold that there is a 'null entity' that is part of everything. | |
From: Achille Varzi (Mereology [2003], 4.1) | |
A reaction: This comes out as roughly the opposite of set theory, which cannot do without the null set, but is not keen on the set of everything. |
10661 | 'Composition is identity' says multitudes are the reality, loosely composing single things [Varzi] |
Full Idea: The thesis known as 'composition is identity' is that identity is mereological composition; a fusion is just the parts counted loosely, but it is strictly a multitude and loosely a single thing. | |
From: Achille Varzi (Mereology [2003], 4.3) | |
A reaction: [He cites D.Baxter 1988, in Mind] It is not clear, from this simple statement, what the difference is between multitudes that are parts of a thing, and multitudes that are not. A heavy weight seems to hang on the notion of 'composed of'. |
10647 | Parts may or may not be attached, demarcated, arbitrary, material, extended, spatial or temporal [Varzi] |
Full Idea: The word 'part' can used whether it is attached, or arbitrarily demarcated, or gerrymandered, or immaterial, or unextended, or spatial, or temporal. | |
From: Achille Varzi (Mereology [2003], 1) |
10651 | If 'part' is reflexive, then identity is a limit case of parthood [Varzi] |
Full Idea: Taking reflexivity as constitutive of the meaning of 'part' amounts to regarding identity as a limit case of parthood. | |
From: Achille Varzi (Mereology [2003], 2.1) | |
A reaction: A nice thought, but it is horribly 'philosophical', and a long way from ordinary usage and common sense (which is, I'm sorry to say, a BAD thing). |
10649 | 'Part' stands for a reflexive, antisymmetric and transitive relation [Varzi] |
Full Idea: It seems obvious that 'part' stands for a partial ordering, a reflexive ('everything is part of itself'), antisymmetic ('two things cannot be part of each other'), and transitive (a part of a part of a thing is part of that thing) relation. | |
From: Achille Varzi (Mereology [2003], 2.1) | |
A reaction: I'm never clear why the reflexive bit of the relation should be taken as 'obvious', since it seems to defy normal usage and common sense. It would be absurd to say 'I'll give you part of the cake' and hand you the whole of it. See Idea 10651. |
10654 | The parthood relation will help to define at least seven basic predicates [Varzi] |
Full Idea: With a basic parthood relation, we can formally define various mereological predicates, such as overlap, underlap, proper part, over-crossing, under-crossing, proper overlap, and proper underlap. | |
From: Achille Varzi (Mereology [2003], 2.2) | |
A reaction: [Varzi offers some diagrams, but they need interpretation] |
10658 | Sameness of parts won't guarantee identity if their arrangement matters [Varzi] |
Full Idea: We might say that sameness of parts is not sufficient for identity, as some entities may differ exclusively with respect to the arrangement of the parts, as when we compare 'John loves Mary' with 'Mary loves John'. | |
From: Achille Varzi (Mereology [2003], 3.2) | |
A reaction: Presumably wide dispersal should also prevent parts from fixing wholes, but there is so much vagueness here that it is tempting to go for unrestricted composition, and then work back to the common sense position. |
6582 | Conventions can only work if they are based on something non-conventional [Fogelin] |
Full Idea: Convention, to exist at all, must have a basis in something that is not conventional; conventions, to work, need something nonconventional to build upon and shape. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.3) | |
A reaction: Fogelin attributes his point to Hume. I agree entirely. No convention could ever possibly catch on in a society unless there were some point to it. If you can't see a point to a convention (like wearing ties) then start looking, because it's there. |
10652 | Conceivability may indicate possibility, but literary fantasy does not [Varzi] |
Full Idea: Conceivability may well be a guide to possibility, but literary fantasy is by itself no evidence of conceivability. | |
From: Achille Varzi (Mereology [2003], 2.1) | |
A reaction: Very nice. People who cite 'conceivability' in this context often have a disgracefully loose usage for the word. Really, really conceivable is probably our only guide to possibility. |
6576 | My view is 'circumspect rationalism' - that only our intellect can comprehend the world [Fogelin] |
Full Idea: My own view might be called 'circumspect rationalism' - the view that our intellectual faculties provide our only means for comprehending the world in which we find oruselves. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.3) | |
A reaction: He needs to say more than that to offer a theory, but I like the label, and it fits the modern revival of rationalism, with which I sympathise, and which rests, I think, on Russell's point that self-evidence comes in degrees, not as all-or-nothing truth. |
6589 | Knowledge is legitimate only if all relevant defeaters have been eliminated [Fogelin] |
Full Idea: In general a knowledge claim is legitimate only if all relevant defeaters have been eliminated. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: The problem here is what is 'relevant'. Fogelin's example is 'Are you sure the suspect doesn't have a twin brother?' If virtual reality is relevant, most knowledge is defeated. Certainly, imaginative people feel that they know less than others. |
6596 | For coherentists, circularity is acceptable if the circle is large, rich and coherent [Fogelin] |
Full Idea: Coherentists argue that if the circle of justifications is big enough, rich enough, coherent enough, and so on, then there is nothing wrong circularity. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: There must always be something wrong with circularity, and no god would put up with it, but we might have to. Of course, two pieces of evidence might be unconnected, such as an equation and an observation. |
6597 | A rule of justification might be: don't raise the level of scrutiny without a good reason [Fogelin] |
Full Idea: One rule for the justification of knowledge might be: Do not raise the level of scrutiny in the absence of a particular reason that triggers it. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: That won't decide the appropriate level of scrutiny from which to start. One of my maxims is 'don't set the bar too high', but it seems tough that one should have to justify moving it. The early scientists tried raising it, and were amazed by the results. |
6588 | Scepticism is cartesian (sceptical scenarios), or Humean (future), or Pyrrhonian (suspend belief) [Fogelin] |
Full Idea: The three forms of scepticism are cartesian, Humean and Pyrrhonian. The first challenges belief by inventing sceptical scenarios; the second doubts the future; the third aims to suspend belief. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: A standard distinction is made between methodological and global scepticism. The former seems to be Cartesian, and the latter Pyrrhonian. The interest here is see Hume placed in a distinctive category, because of his views on induction. |
6590 | Scepticism deals in remote possibilities that are ineliminable and set the standard very high [Fogelin] |
Full Idea: Sceptical scenarios deal in wildly remote defeating possibilities, so that the level of scrutiny becomes unrestrictedly high, and they also usually deal with defeators that are in principle ineliminable. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.4) | |
A reaction: The question of how high we 'set the bar' seems to me central to epistemology. There is clearly an element of social negotiation involved, centring on what is appropriate. If, though, scepticism is 'ineliminable', we must face up to that. |
6583 | Radical perspectivism replaces Kant's necessary scheme with many different schemes [Fogelin] |
Full Idea: We reach radical perspectivism by replacing Kant's single, necessary categorial scheme with a plurality of competing categorial schemes. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.3) | |
A reaction: It certainly looks as if Kant sent us down a slippery slope into the dafter aspects of twentieth century relativism. The best antidote I know of is Davidson's (e.g. Idea 6398). But then it seems unimaginative to say that only one scheme is possible. |
6555 | We are also irrational, with a unique ability to believe in bizarre self-created fictions [Fogelin] |
Full Idea: We as human beings are also irrational animals, unique among animals in our capacity to place faith in bizarre fictions of our own construction. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Intro) | |
A reaction: This is glaringly true, and a very nice corrective to the talk of Greeks and others about man as the 'rational animal'. From a distance we might be described by Martians as the 'mad animal'. Is the irrational current too strong to swim against? |
6605 | Critics must be causally entangled with their subject matter [Fogelin] |
Full Idea: Critics must become causally entangled with their subject matter. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.6) | |
A reaction: This remark is built on Hume's views. You may have a strong view about a singer, but it may be hard to maintain when someone plays you six rival versions of the same piece. I agree entirely with the remark. It means there are aesthetic experts. |
6607 | The word 'beautiful', when deprived of context, is nearly contentless [Fogelin] |
Full Idea: Like the word 'good', the word 'beautiful', when deprived of contextual support, is nearly contentless. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.6) | |
A reaction: If I say with, for example, Oscar Wilde that beauty is the highest ideal in life, this doesn't strike me as contentless, but I still sympathise with Fogelin's notion that beauty is rooted in particulars. |
6604 | Saying 'It's all a matter to taste' ignores the properties of the object discussed [Fogelin] |
Full Idea: "It is all a matter of taste" may be an all-purpose stopper of discussions of aesthetic values, but it also completely severs the connection with the actual properties of the object under consideration. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.6) | |
A reaction: This remark grows out of his discussion of Hume. I like this remark, which ties in with Particularism in morality, and with the central role of experiments in science. The world forces beliefs on us. |
6586 | Cynics are committed to morality, but disappointed or disgusted by human failings [Fogelin] |
Full Idea: Cynics are usually unswerving in their commitment to a moral ideal, but disappointed or disgusted by humanity's failure to meet it. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.3) | |
A reaction: I felt quite suicidal the other day when I saw someone park diagonally across two parking spaces. They can't seem to grasp the elementary Kantian slogan 'What if everybody did that?' It's all hopeless. I wonder if I am becoming a bit of a Cynic? |
6572 | Deterrence, prevention, rehabilitation and retribution can come into conflict in punishments [Fogelin] |
Full Idea: The purposes of punishment include deterrence, prevention, rehabilitation, and retribution, but they don't always sit well together. Deterrence is best served by making prisons miserable places, but this may run counter to rehabilitation. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.2) | |
A reaction: It seems to most educated people that retribution should be pushed far down the list if we are to be civilised (see Idea 1659), and yet personal revenge for a small act of aggression seems basic, normal and acceptable. We dream of rehabilitation. |
6573 | Retributivists say a crime can be 'paid for'; deterrentists still worry about potential victims [Fogelin] |
Full Idea: A strict retributivist is likely to say that once a crime is paid for, that's that; a deterrence theorist is likely to say that the protection of potential victims overrides the released convict's right to a free and fresh start. | |
From: Robert Fogelin (Walking the Tightrope of Reason [2003], Ch.2) | |
A reaction: Interesting since the retributivist here has the more liberal attitude. Reformists will also have a dilemma when years in prison have failed to reform the convict. Virtue theorists like balance, and sensitively consider our relations with the criminals. |