32 ideas
| 18806 | Frege thought traditional categories had psychological and linguistic impurities [Frege, by Rumfitt] |
| Full Idea: Frege rejected the traditional categories as importing psychological and linguistic impurities into logic. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by Ian Rumfitt - The Boundary Stones of Thought 1.2 | |
| A reaction: Resisting such impurities is the main motivation for making logic entirely symbolic, but it doesn't follow that the traditional categories have to be dropped. |
| 21122 | Liberal Nationalism says welfare states and democracy needed a shared sense of nationality [Shorten] |
| Full Idea: The Liberal Nationalist argument is that if we want to have welfare states or vibrant democracies, then we will need the kind of solidarity that shared nationality fosters. …Unwelcome democratic decisions are more acceptable when made by co-nationals. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 02) | |
| A reaction: We've just experienced this with Brexit (2016), where perfectly sensible decisions were being made in Brussels, but the popular press whipped up hostility because the British had a restricted role in the decisions. Prefer our idiots to their sages. |
| 8490 | First-level functions have objects as arguments; second-level functions take functions as arguments [Frege] |
| Full Idea: Just as functions are fundamentally different from objects, so also functions whose arguments are and must be functions are fundamentally different from functions whose arguments are objects. The latter are first-level, the former second-level, functions. | |
| From: Gottlob Frege (Function and Concept [1891], p.38) | |
| A reaction: In 1884 he called it 'second-order'. This is the standard distinction between first- and second-order logic. The first quantifies over objects, the second over intensional entities such as properties and propositions. |
| 8492 | Relations are functions with two arguments [Frege] |
| Full Idea: Functions of one argument are concepts; functions of two arguments are relations. | |
| From: Gottlob Frege (Function and Concept [1891], p.39) | |
| A reaction: Nowadays we would say 'two or more'. Another interesting move in the aim of analytic philosophy to reduce the puzzling features of the world to mathematical logic. There is, of course, rather more to some relations than being two-argument functions. |
| 8487 | Arithmetic is a development of logic, so arithmetical symbolism must expand into logical symbolism [Frege] |
| Full Idea: I am of the opinion that arithmetic is a further development of logic, which leads to the requirement that the symbolic language of arithmetic must be expanded into a logical symbolism. | |
| From: Gottlob Frege (Function and Concept [1891], p.30) | |
| A reaction: This may the the one key idea at the heart of modern analytic philosophy (even though logicism may be a total mistake!). Logic and arithmetical foundations become the master of ontology, instead of the servant. The jury is out on the whole enterprise. |
| 18899 | Frege takes the existence of horses to be part of their concept [Frege, by Sommers] |
| Full Idea: Frege regarded the existence of horses as a property of the concept 'horse'. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by Fred Sommers - Intellectual Autobiography 'Realism' |
| 4028 | Frege allows either too few properties (as extensions) or too many (as predicates) [Mellor/Oliver on Frege] |
| Full Idea: Frege's theory of properties (which he calls 'concepts') yields too few properties, by identifying coextensive properties, and also too many, by letting every predicate express a property. | |
| From: comment on Gottlob Frege (Function and Concept [1891]) by DH Mellor / A Oliver - Introduction to 'Properties' §2 | |
| A reaction: Seems right; one extension may have two properties (have heart/kidneys), two predicates might express the same property. 'Cutting nature at the joints' covers properties as well as objects. |
| 8489 | The concept 'object' is too simple for analysis; unlike a function, it is an expression with no empty place [Frege] |
| Full Idea: I regard a regular definition of 'object' as impossible, since it is too simple to admit of logical analysis. Briefly: an object is anything that is not a function, so that an expression for it does not contain any empty place. | |
| From: Gottlob Frege (Function and Concept [1891], p.32) | |
| A reaction: Here is the core of the programme for deriving our ontology from our logic and language, followed through by Russell and Quine. Once we extend objects beyond the physical, it becomes incredibly hard to individuate them. |
| 9947 | Concepts are the ontological counterparts of predicative expressions [Frege, by George/Velleman] |
| Full Idea: Concepts, for Frege, are the ontological counterparts of predicative expressions. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by A.George / D.J.Velleman - Philosophies of Mathematics Ch.2 | |
| A reaction: That sounds awfully like what many philosophers call 'universals'. Frege, as a platonist (at least about numbers), I would take to be in sympathy with that. At least we can say that concepts seem to be properties. |
| 10319 | An assertion about the concept 'horse' must indirectly speak of an object [Frege, by Hale] |
| Full Idea: Frege had a notorious difficulty over the concept 'horse', when he suggests that if we wish to assert something about a concept, we are obliged to proceed indirectly by speaking of an object that represents it. | |
| From: report of Gottlob Frege (Function and Concept [1891], Ch.2.II) by Bob Hale - Abstract Objects | |
| A reaction: This sounds like the thin end of a wedge. The great champion of objects is forced to accept them here as a façon de parler, when elsewhere they have ontological status. |
| 8488 | A concept is a function whose value is always a truth-value [Frege] |
| Full Idea: A concept in logic is closely connected with what we call a function. Indeed, we may say at once: a concept is a function whose value is always a truth-value. ..I give the name 'function' to what is meant by the 'unsaturated' part. | |
| From: Gottlob Frege (Function and Concept [1891], p.30) | |
| A reaction: So a function becomes a concept when the variable takes a value. Problems arise when the value is vague, or the truth-value is indeterminable. |
| 9948 | Unlike objects, concepts are inherently incomplete [Frege, by George/Velleman] |
| Full Idea: For Frege, concepts differ from objects in being inherently incomplete in nature. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by A.George / D.J.Velleman - Philosophies of Mathematics Ch.2 | |
| A reaction: This is because they are 'unsaturated', needing a quantified variable to complete the sentence. This could be a pointer towards Quine's view of properties, as simply an intrinsic feature of predication about objects, with no separate identity. |
| 4972 | I may regard a thought about Phosphorus as true, and the same thought about Hesperus as false [Frege] |
| Full Idea: From sameness of meaning there does not follow sameness of thought expressed. A fact about the Morning Star may express something different from a fact about the Evening Star, as someone may regard one as true and the other false. | |
| From: Gottlob Frege (Function and Concept [1891], p.14) | |
| A reaction: This all gets clearer if we distinguish internalist and externalist theories of content. Why take sides on this? Why not just ask 'what is in the speaker's head?', 'what does the sentence mean in the community?', and 'what is the corresponding situation?' |
| 21136 | Utilitarians conflate acts and omissions; causing to drown and failing to save are the same [Shorten] |
| Full Idea: Most uitlitarians do not distinguish between acts and omissions, and see no morally relevant difference between walking past a drowning child and pushing a child into a pond. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 09) | |
| A reaction: He cites Peter Singer as an instance. The notorious Trolley Problem focuses on such issues. Michael Sandel in 'Justice' is good on that. If motive and intention matter, the two cases could be very different. Too timid to push, but also too timid to help? |
| 18552 | Forget about beauty; just concentrate on the virtues of delicacy and discernment admired in critics [Hume, by Scruton] |
| Full Idea: Hume suggest we get away from the fruitless discussion of beauty, and simply concentrate on the qualities we admire, and ought to admire, in a critic - qualities such as delicacy and discernment. | |
| From: report of David Hume (Of the standard of taste [1757]) by Roger Scruton - Beauty: a very short introduction 6 | |
| A reaction: We might wonder how you can admire 'discernment' without some view of the thing being discern, which is in danger of being beauty. How do you judge delicacy and discernment without judging the objects of the critic's taste? Mere authority? |
| 6608 | Strong sense, delicate sentiment, practice, comparisons, and lack of prejudice, are all needed for good taste [Hume] |
| Full Idea: Strong sense, united to delicate sentiment, improved by practice, perfected by comparison, and cleared of all prejudice, can alone entitle critics to the valuable character of having 'taste'. | |
| From: David Hume (Of the standard of taste [1757]), quoted by Robert Fogelin - Walking the Tightrope of Reason Ch.6 | |
| A reaction: I agree entirely with this, but then I am a very politically incorrect elitist when it comes to taste. It just seems screamingly obvious that professional wine-tasters have a better appreciation of wine than me, and so on for the rest of the arts. |
| 21135 | There are eight different ways in which groups of people can be oppressed [Shorten, by PG] |
| Full Idea: Groups can be oppressed in seven different ways: by violence, marginalisation, powerlessness, cultural domination, exploitation, stigmatisation, neglect of interests, and lack of egalitarian ethos. | |
| From: report of Andrew Shorten (Contemporary Political Theory [2016], 08) by PG - Db (ideas) | |
| A reaction: [my summary of Shorten's summary] These headings seem to overlap somewhat. It strengthens my growing view that if one builds a political philosophy around the supreme virtue of respect, then all of these modes of oppression are undermined. |
| 21118 | Constitutional Patriotism unites around political values (rather than national identity) [Shorten] |
| Full Idea: 'Constitutional patriots' favour a 'post-national' form of political identity in which members share common political values, but not necessarily a common national identity. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 02) | |
| A reaction: Interesting. Not sure if you can keep political values distinct from community values. In theory it is an approach designed for cultural pluralism. But if the political values are liberal that implies cultural freedoms for (e.g.) women. |
| 21129 | Democracy is a method of selection, or it involves participation, or it concerns public discussion [Shorten] |
| Full Idea: Competitive democrats believe that democracy is simply a method for selecting political leaders …Participatory democrats associate the democratic ideal with living in a participatory society …Deliberative democrats identify public reasoning as key. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 05) | |
| A reaction: Personally I would favour public discussion, but that is the last thing leaders want, especially if they are not very knowledgeable or clever. |
| 21130 | Some say democracy is intrinsically valuable, others that it delivers good outcomes [Shorten] |
| Full Idea: Some theorist think that democracy is intrinsically valuable, but others believe that it is valuable because it delivers good outcomes. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 05) | |
| A reaction: It is hard to see how the majority having a dictatorship over the minority could be an intrinsic good. If we start with respect as the supreme social virtue, then participation and public discussion might be intrinsic goods. |
| 21126 | Representative should be either obedient, or sensible, or typical [Shorten] |
| Full Idea: Mandate Representation says they are delegates who should not deviate from instructions; Trustee says they use their discretion and judgement; Descriptive says they share group characteristics. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 04) | |
| A reaction: [compressed] There is also being a representative because you have an audience (such as celebrity campains). The second type was famously defended by Edmund Burke. The third implies being the same colour, or gender, or religion. |
| 21128 | There is 'mirror representation' when the institution statistically reflects the population [Shorten] |
| Full Idea: The general theory of 'mirror representation' says that a representative body or institution should be a statistically accurate sample of the wider society it represents. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 04) | |
| A reaction: How fine-grained should this be in accuracy. Should every small minority have at least one rep? Can't reps be trusted to speak for people a bit different from themselves? Maybe not! He quotes Mirabeau in support of this idea. |
| 21127 | In a changed situation a Mandated Representative can't keep promises and fight for constituents [Shorten] |
| Full Idea: An important tension in Mandate Representation seemingly requires politicians to both uphold their electoral promises and promote the interests of their constituents. These can conflict, with changed circumstances or information. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 04 Box 4.1) | |
| A reaction: So be careful what you promise, and don't take on a party loyalty that conflicts with your constituents' interests. Easy. |
| 21117 | Liberal citizens have a moral requirement to respect freedom and equality [Shorten] |
| Full Idea: The liberal theory of political community contains a moral thesis which says that members should share a moral concern for one another as free and equal citizens. …Citizens are not required to have much else in common with one another. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 02) | |
| A reaction: A key thought. Liberal hearts swell with pride at the first half, but anti-liberals are interested in the second bit. If my neighbour lives in miserable poverty, should I only ask whether they are 'equal and free'? Respect everything! |
| 21134 | Maybe the rational autonomous liberal individual is merely the result of domination [Shorten] |
| Full Idea: On a radical reading of Foucault, the very ideal of a rational, autonomous moral agent that lies at the heart of liberal governmentality is nothing more than the effect of a particular form of domination. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 06) | |
| A reaction: [Apologies for the word 'governmentality'; I'm just the messenger] Presumably Foucault's philosophy is also the result of domination, so it is hard to know where to start. The status of rationality is the central issue. |
| 21113 | Liberal equality concerns rights, and liberal freedom concerns choice of ends [Shorten] |
| Full Idea: A liberal society treats people as equals by equipping them with the same set of rights, and it respects their freedom by allowing them to choose their own freely chosen ends. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 01) | |
| A reaction: Equality of rights is fairly standard in any modern society (at least in principle). Freedom of ends is trickier. You can dismiss someone sleeping in the gutter as living a life that resulted from their choices. How many people have clear goals in life? |
| 21121 | Liberal Nationalism encourages the promotion of nationalistic values [Shorten] |
| Full Idea: 'Liberal nationalists' say liberalism is compatible with promoting nationality, by teaching national history and literature and supporting its language. Compatriot priority adds that the needs of compatriots can override those of foreigners. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 02) | |
| A reaction: [compressed] As a teacher of literature I always preferred to teach the literature of my own country, but without considering the reasons for it. But it was a combination of pride in my people's achievements, and a desire to strengthen social bonds. |
| 21115 | Liberalism should not make assumptions such as the value of choosing your own life plan [Shorten] |
| Full Idea: Communitarians say that liberalism could only justified by appealing to controversial assumptions that are not universally shared, such as the significance of choosing one's own plan of life. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 01) | |
| A reaction: In the past, at least, huge numbers of people have been perfectly happy living a life designed for them by their parents. It is not much consolation for a disastrous life that at least you planned it yourself. Liberal values are not self-evident. |
| 21114 | Liberals treat individuals as mutual strangers, rather than as social beings [Shorten] |
| Full Idea: Communitarians say that liberalism treats individuals as strangers to one another, and underestimates the extent to which individuals are 'constituted' by their societies and social memberships. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 01) | |
| A reaction: On the other hand you can have 'too much community'. Surely the test for any political system is the quality of lives led by individual citizens? There can never be a wonderful community full of miserable citizens. |
| 21123 | Liberal Nationalism is more communitarian, and Constitutional Patriotism more cosmopolitan [Shorten] |
| Full Idea: While Liberal Nationalists push liberalism in a particularist and communitarian direction, Constitutional Patriots emphasise its universalistic and cosmopolitan aspects. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 02) | |
| A reaction: So many attractive qualities to choose from! A tolerant community ought to be cosmopolitan. Being universalistic should not entail a neglect of the particular. Etc. |
| 21124 | Religious toleration has been institutionalised by the separation of church and state [Shorten] |
| Full Idea: One historically influential solution to the discord unleashed by the fact of religious diversity was to institutionalise the principle of toleration by separating church and state. | |
| From: Andrew Shorten (Contemporary Political Theory [2016], 03) | |
| A reaction: In 2018 Britain we still have an established religion (Anglicanism - Episcopalianism in the US), but toleration has arrived with the decline of religious belief. It must still be tough for Muslims, Jews etc to see a different religion as the official one. |
| 8491 | The Ontological Argument fallaciously treats existence as a first-level concept [Frege] |
| Full Idea: The ontological proof of God's existence suffers from the fallacy of treating existence as a first-level concept. | |
| From: Gottlob Frege (Function and Concept [1891], p.38 n) | |
| A reaction: [See Idea 8490 for first- and second-order functions] This is usually summarised as the idea that existence is a quantifier rather than a predicate. |