52 ideas
| 7910 | Pursue truth with the urgency of someone whose clothes are on fire [Ashvaghosha] |
| Full Idea: As though your turban or your clothes were on fire, so with a sense of urgency should you apply your intellect to the comprehension of the truths. | |
| From: Ashvaghosha (Saundaranandakavya [c.50], XVI) | |
| A reaction: The best philosophers need no such urging. I retain a romantic view that we should be 'natural' in these things. See Plato's views in Idea 2153 and 1638. However, maybe I should be confronted with this quotation every morning when I awake. |
| 10354 | Correspondence could be with other beliefs, rather than external facts [Kusch] |
| Full Idea: The correspondence theory of truth does not commit one to the view the reality is mind-independent. There is no reason why the 'facts' that correspond to true beliefs might not themselves be beliefs or ideas. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.17) | |
| A reaction: This seems important, as it is very easy to assume that espousal of correspondence necessarily goes with realism about the external world. It is surprising to think that a full-blown Idealist might espouse the correspondence theory. |
| 10353 | Tarskians distinguish truth from falsehood by relations between members of sets [Kusch] |
| Full Idea: According to the Tarskians we separate out truths from falsehoods by tracing the relations between members of different sets. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.16) |
| 10337 | We can have knowledge without belief, if others credit us with knowledge [Kusch] |
| Full Idea: We can have knowledge that p without believing that p. It is enough that others credit us with the knowledge. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 5) | |
| A reaction: [He is discussing Welbourne 1993] This is an extreme of the communitarian view. |
| 10357 | Methodological Solipsism assumes all ideas could be derived from one mind [Kusch] |
| Full Idea: 'Methodological solipsism' says merely that everyone can conceive of themselves as the only subject. Everyone can construct all referents of their thought and talk out of complexes of their very own experience. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.19) | |
| A reaction: The possibility of this can be denied (e.g. by Putnam 1983, dating back to Wittgenstein). I too would doubt it, though finding a good argument seems a forlorn hope. |
| 10339 | Foundations seem utterly private, even from oneself at a later time [Kusch] |
| Full Idea: Foundationalists place the foundations of knowledge at a point where they are in principle accessible only to the individual knower. They cannot be 'shared' with another person, or with oneself at a later time. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 8) | |
| A reaction: Kusch is defending an extremely social view of knowledge. Being private to an individual may just he an unfortunate epistemological fact. Being unavailable even to one's later self seems a real problem for foundational certainty. |
| 10331 | Testimony is reliable if it coheres with evidence for a belief, and with other beliefs [Kusch] |
| Full Idea: Testimony must be reliable since its deliveries cohere both with input from other information routes in the formation of single beliefs, and with other types of beliefs in the formation of systems of belief. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 4) | |
| A reaction: Kusch criticises this view (credited to C.A.J. Coady 1992) as too individualistic , but it sounds to me dead right. I take a major appeal of the coherence account of justification to be its capacity to extend seamlessly out into external testimony. |
| 10338 | The coherentist restricts the space of reasons to the realm of beliefs [Kusch] |
| Full Idea: The coherentist restricts the space of reasons to the realm of beliefs. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 8) | |
| A reaction: I endorse this idea, which endorses Davidson's slogan on the subject. The key thought is that a 'pure' sensation is uninterpreted, and so cannot justify anything. It is only once it generates a proposition that it can justify. But McDowell 1994. |
| 10340 | Individualistic coherentism lacks access to all of my beliefs, or critical judgement of my assessment [Kusch] |
| Full Idea: Individualistic versions of coherentism assume that a belief is justified if it fits with all, or most, of my contemporaneous beliefs. But who has access to that totality? Who can judge my assessment? From what position could it be judged? | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 8) | |
| A reaction: [compressed] Though I agree with Kusch on the social aspect of coherence, I don't think these are major criticisms. Who can access, or critically evaluate a society's body of supposedly coherent beliefs? We just do our best. |
| 10345 | Individual coherentism cannot generate the necessary normativity [Kusch] |
| Full Idea: Standard forms of coherentism are unable to account for normativity, because of their common individualism. Normativity cannot be generated within the isolated individual, or in the causal interaction between world and individual mind. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.10) | |
| A reaction: This thought leads to belief in rationalism and the a priori, not (as Kusch hopes) to the social dimension. How can social normativity get off the ground if there is none of it to be found in individuals? The criteria of coherence seem to be given. |
| 10350 | Cultures decide causal routes, and they can be critically assessed [Kusch] |
| Full Idea: Assessments of causal routes are specific to cultures, and thus not beyond dialectical justification. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.11) | |
| A reaction: This is a good defence of the social and communitarian view against those who are trying to be thoroughly naturalistic and physicalist by relying entirely on causal processes for all explanation, even though I sympathise with such naturalism. |
| 10343 | Process reliabilism has been called 'virtue epistemology', resting on perception, memory, reason [Kusch] |
| Full Idea: Process reliabilism is sometimes subsumed under the label 'virtue epistemology', so that processes are 'epistemically virtuous' if they lead mostly to true beliefs. The 'intellectual virtues' here are perception, memory or reasoning. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 9) | |
| A reaction: I am shocked that 'intellectual virtue' should be hijacked by reliabilists, suggesting that it even applies to a good clock. I like the Aristotelian idea that sound knowledge rests on qualities of character in the knower - including social qualities. |
| 10341 | Justification depends on the audience and one's social role [Kusch] |
| Full Idea: How a claim (about an X-ray) needs to be justified depends on whether one is confronted by a group of laypersons, or of experts, and is prescribed by one's social role. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 8) | |
| A reaction: I think this is exactly right. I cannot think of any absolute criterion for justification which doesn't play straight into the hands of sceptics. Final and certain justification is an incoherent notion. But I am a little more individualistic than Kusch. |
| 10334 | Testimony is an area in which epistemology meets ethics [Kusch] |
| Full Idea: Testimony is an area in which epistemology meets ethics. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 5) | |
| A reaction: This is very thought-provoking. A key concept linking the two would be 'respect'. Consider also 'experts'. |
| 10336 | Powerless people are assumed to be unreliable, even about their own lives [Kusch] |
| Full Idea: The powerless in society are not usually taken to be trustworthy witnesses even when it comes to providing information about their own lives. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 5) | |
| A reaction: This is where epistemology shades off into politics and the writings of Foucault. |
| 10324 | Testimony does not just transmit knowledge between individuals - it actually generates knowledge [Kusch] |
| Full Idea: Testimony is not just a means of transmission of complete items of knowledge from and to an individual. Testimony is almost always generative of knowledge. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Intro) | |
| A reaction: I'm not clear how my testimony could fail to be knowledge for me, but become knowledge just because I pass it to you. I might understand what I say better than you did. When fools pool their testimony, presumably not much knowledge results. |
| 10327 | Some want to reduce testimony to foundations of perceptions, memories and inferences [Kusch] |
| Full Idea: Reductionalists about testimony are foundationalists by temperament. ...Their project amounts to justifying our testimonial beliefs in terms of perceptions, memories and inferences. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 4) | |
| A reaction: Kusch wants to claim that the sharing of testimony is the means by which knowledge is created. My line is something like knowledge being founded on a social coherence, which is an extension of internal individual coherence. |
| 10329 | Testimony won't reduce to perception, if perception depends on social concepts and categories [Kusch] |
| Full Idea: How can we hope to reduce testimony to perception if the way we perceive the world is to a considerable extent shaped by concepts and categories that we have learned from others? | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 4) | |
| A reaction: To me this sounds like good support for coherentism, the benign circle between my reason, my experience, and the testimony and reason of others. Asking how the circle could get started shows ignorance of biology. |
| 10330 | A foundation is what is intelligible, hence from a rational source, and tending towards truth [Kusch] |
| Full Idea: It can be argued that testimony is non-reductive because it relies on the fact that whatever is intelligible is likely to come from a rational source, and that rational sources, by their very nature, tend towards the truth. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 4 n7) | |
| A reaction: [He cites Tyler Burge 1993, 1997] If this makes testimony non-reductive, how would one assess whether the testimony is 'intelligible'? |
| 10325 | Vindicating testimony is an expression of individualism [Kusch] |
| Full Idea: To believe that testimony needs a general vindication is itself an expression of individualism. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Intro) | |
| A reaction: Kusch is a spokesman for Communitarian Epistemology. Surely we are allowed to identify the criteria for what makes a good witness? Ask a policeman. |
| 10335 | Myths about lonely genius are based on epistemological individualism [Kusch] |
| Full Idea: Many myths about the lonely scientific genius underwrite epistemological individualism. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 5) | |
| A reaction: They all actually say that they 'stood on the shoulders of giants', and they are invariably immersed in the contemporary researches of teams of like-minded people. How surprised were the really expert contemporaries by Newton, Einstein, Gödel? |
| 10323 | Communitarian Epistemology says 'knowledge' is a social status granted to groups of people [Kusch] |
| Full Idea: I propose 'communitarian epistemology' - claiming first that the term 'knowledge' marks a social status, and is dependent on the existence of communities, and second that this social status is typically granted to groups of people. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Intro) | |
| A reaction: I find this very congenial, though Kusch goes a little far when he claims that knowledge is largely created by social groups. He allows that Robinson Crusoe might have knowledge of his island, but can't give a decent account of it. |
| 10348 | Private justification is justification to imagined other people [Kusch] |
| Full Idea: Coming to convince myself is actually to form a pretend communal belief with pretend others, ..which is clearly parasitic on the case where the others are real. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.11) | |
| A reaction: This slightly desperate move is a way for 'communitarian' epistemologists to deal with Robinson Crusoe cases. I think Kusch is right, but it is a bit hard to prove that this is what is 'actually' going on. |
| 10349 | To be considered 'an individual' is performed by a society [Kusch] |
| Full Idea: One cannot even have the social status of 'being an individual' unless it has been conferred on one by a communal performative belief. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.11) | |
| A reaction: This sounds crazy until you think of the mentality of a tenth generation slave in a fully slave-owning society. |
| 7906 | When the Buddha reached the highest level of insight, he could detect no self in the world [Ashvaghosha] |
| Full Idea: The great Buddha passed through the eight stages of Transic insight, and quickly reached their highest point. From the summit of the world downwards he could detect no self anywhere. | |
| From: Ashvaghosha (Buddhacarita [c.50], XIV) | |
| A reaction: In the manner of Nietzsche, I am inclined to say that they find what they want to find, because that is their value. They want to get rid of the self, and dream of a mode in which existence continues without it. Is Buddhism opposed to human life? |
| 10344 | Our experience may be conceptual, but surely not the world itself? [Kusch] |
| Full Idea: I am unconvinced by McDowell's arguments in favour of treating the world as itself conceptual. Granted that our experience is conceptual in quality; it still does not follow that the world itself is conceptual. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 9) | |
| A reaction: I would take Kusch's point to be a given in any discussion of concepts, and McDowell as a non-starter on this one. I am inclined to believe that we do have non-conceptual experiences, but I take them to be epistemologically useless. |
| 10358 | Often socialising people is the only way to persuade them [Kusch] |
| Full Idea: Often we can convince members of other cultures only by socializing them into our culture. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.19) | |
| A reaction: This looks both true and interesting, and is good support for Kusch's communitarian epistemology. What actually persuades certainly doesn't have to be reasons, and may be almost entirely social. |
| 10333 | Communitarianism in epistemology sees the community as the primary knower [Kusch] |
| Full Idea: Communitarianism in epistemology sees the community as the primary knower. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 5) | |
| A reaction: This thought offers an account of epistemology which could fit in with communitarian political views. See the ideas of Martin Kusch in this database. |
| 10351 | Natural kinds are social institutions [Kusch] |
| Full Idea: Natural kinds are social institutions. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch.11) | |
| A reaction: I can see what he means, but I take this to be deeply wrong. A clarification of what exactly is meant by a 'natural kind' is needed before we can make any progress with this one. Is a village a natural kind? Or a poodle? Or a shoal? |
| 20624 | Work degrades into heat, but not vice versa [Close] |
| Full Idea: William Thomson, Lord Kelvin, declared (in 1865) the second law of thermodynamics: mechanical work inevitably tends to degrade into heat, but not vice versa. | |
| From: Frank Close (Theories of Everything [2017], 3 'Perpetual') | |
| A reaction: The basis of entropy, which makes time an essential part of physics. Might this be the single most important fact about the physical world? |
| 20623 | First Law: energy can change form, but is conserved overall [Close] |
| Full Idea: The first law of thermodynamics : energy can be changed from one form to another, but is always conserved overall. | |
| From: Frank Close (Theories of Everything [2017], 3 'Perpetual') | |
| A reaction: So we have no idea what energy is, but we know it's conserved. (Daniel Bernoulli showed the greater the mean energy, the higher the temperature. James Joule showed the quantitative equivalence of heat and work p.26-7) |
| 20625 | Third Law: total order and minimum entropy only occurs at absolute zero [Close] |
| Full Idea: The third law of thermodynamics says that a hypothetical state of total order and minimum entropy can be attained only at the absolute zero temperature, minus 273 degrees Celsius. | |
| From: Frank Close (Theories of Everything [2017], 3 'Arrow') | |
| A reaction: If temperature is energetic movement of atoms (or whatever), then obviously zero movement is the coldest it can get. So is absolute zero an energy state, or an absence of energy? I have no idea what 'total order' means. |
| 20622 | All motions are relative and ambiguous, but acceleration is the same in all inertial frames [Close] |
| Full Idea: There is no absolute state of rest; only relative motions are unambiguous. Contrast this with acceleration, however, which has the same magnitude in all inertial frames. | |
| From: Frank Close (Theories of Everything [2017], 3 'Newton's') | |
| A reaction: It seems important to remember this, before we start trumpeting about the whole of physics being relative. ....But see Idea 20634! |
| 20628 | The electric and magnetic are tightly linked, and viewed according to your own motion [Close] |
| Full Idea: Electric and magnetic phenomena are profoundly intertwined; what you interpret as electric or magnetic thus depends on your own motion. | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: This sounds like an earlier version of special relativity. |
| 20635 | The general relativity equations relate curvature in space-time to density of energy-momentum [Close] |
| Full Idea: The essence of general relativity relates 'curvature in space-time' on one side of the equation to the 'density of momentum and energy' on the other. ...In full, Einstein required ten equations of this type. | |
| From: Frank Close (Theories of Everything [2017], 5 'Gravity') | |
| A reaction: Momentum involves mass, and energy is equivalent to mass (e=mc^2). |
| 20627 | Electric fields have four basic laws (two by Gauss, one by Ampère, one by Faraday) [Close] |
| Full Idea: Four basic laws of electric and magnetic fields: Gauss's Law (about the flux produced by a field), Gauss's law of magnets (there can be no monopoles), Ampère's Law (fields on surfaces), and Farday's Law (accelerated magnets produce fields). | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: [Highly compressed, for an overview. Close explains them] |
| 20630 | Light isn't just emitted in quanta called photons - light is photons [Close] |
| Full Idea: Planck had assumed that light is emitted in quanta called photons. Einstein went further - light is photons. | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: The point is that light travels as entities which are photons, rather than the emissions being quantized packets of some other stuff. |
| 20637 | In general relativity the energy and momentum of photons subjects them to gravity [Close] |
| Full Idea: In Einstein's general theory, gravity acts also on energy and momentum, not simply on mass. For example, massless photons of light feel the gravitational attraction of the Sun and can be deflected. | |
| From: Frank Close (Theories of Everything [2017], 5 'Planck') | |
| A reaction: Ah, a puzzle solved. How come massless photons are bent by gravity? |
| 20629 | Electro-magnetic waves travel at light speed - so light is electromagnetism! [Close] |
| Full Idea: Faradays' measurements predicted the speed of electro-magnetic waves, which happened to be the speed of light, so Maxwell made an inspired leap: light is an electromagnetic wave! | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: Put that way, it doesn't sound like an 'inspired' leap, because travelling at exactly the same speed seems a pretty good indication that they are the same sort of thing. (But I'm not denying that Maxwell was a special guy!) |
| 20632 | In QED, electro-magnetism exists in quantum states, emitting and absorbing electrons [Close] |
| Full Idea: Dirac created quantum electrodynamics (QED): the universal electro-magnetic field can exist in discreet states of energy (with photons appearing and disappearing by energy excitations. This combined classical ideas, quantum theory and special relativity. | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: Close says this is the theory of everything in atomic structure, but not in nuclei (which needs QCD and QFD). So if there are lots of other 'fields' (e.g. gravitational, weak, strong, Higgs), how do they all fit together? Do they talk to one another? |
| 20642 | Photon exchange drives the electro-magnetic force [Close] |
| Full Idea: The exchange of photons drives the electro-magnetic force. | |
| From: Frank Close (Theories of Everything [2017], 6 'Superstrings') | |
| A reaction: So light, which we just think of as what is visible, is a mere side-effect of the engine room of nature - the core mechanism of the whole electro-magnetic field. |
| 20639 | Quantum fields contain continual rapid creation and disappearance [Close] |
| Full Idea: Quantum field theory implies that the vacuum of space is filled with particles and antiparticles which bubble in and out of existence on faster and faster timescales over shorter and shorter distances. | |
| From: Frank Close (Theories of Everything [2017], 6 'Intro') | |
| A reaction: Ponder this sentence until you head aches. Existence, but not as we know it, Jim. Close says calculations in QED about the electron confirm this. |
| 20641 | Electrons get their mass by interaction with the Higgs field [Close] |
| Full Idea: The electron gets its mass by interaction with the ubiquitous Higgs field. | |
| From: Frank Close (Theories of Everything [2017], 6 'Hierarchy') | |
| A reaction: I thought I understood mass until I read this. Is it just wrong to say the mass of a table is the 'amount of stuff' in it? |
| 20631 | Dirac showed how electrons conform to special relativity [Close] |
| Full Idea: In 1928 Paul Dirac discovered the quantum equation that describes the electron and conforms to the requirements special relativity theory. | |
| From: Frank Close (Theories of Everything [2017], 3 'Light!') | |
| A reaction: This sounds like a major step in the unification of physics. Quantum theory and General relativity remain irreconcilable. |
| 20626 | Modern theories of matter are grounded in heat, work and energy [Close] |
| Full Idea: The link between temperature, heat, work and energy is at the root of our historical ability to construct theories of matter, such as Newton's dynamics, while ignoring, and indeed being ignorant of - atomic dimensions. | |
| From: Frank Close (Theories of Everything [2017], 3 'Arrow') | |
| A reaction: That is, presumably, that even when you fill in the atoms, and the standard model of physics, these aspects of matter do the main explaiining (of the behaviour, rather than of the structure). |
| 20633 | The Higgs field is an electroweak plasma - but we don't know what stuff it consists of [Close] |
| Full Idea: In 2012 it was confirmed that we are immersed in an electroweak plasma - the Higgs field. We curently have no knowledge of what this stuff might consist of. | |
| From: Frank Close (Theories of Everything [2017], 4 'Higgs') | |
| A reaction: The second sentence has my full attention. So we don't understand a field properly until we understand the 'stuff' it is made of? So what are all the familiar fields made of? Tell me more! |
| 20640 | Space-time is indeterminate foam over short distances [Close] |
| Full Idea: At very short distances, space-time itself becomes some indeterminate foam. | |
| From: Frank Close (Theories of Everything [2017], 6 'Intro') | |
| A reaction: [see Close for a bit more detail of this weird idea] |
| 10332 | Omniscience is incoherent, since knowledge is a social concept [Kusch] |
| Full Idea: The very idea of omniscience is dubious, at least for the communitarian epistemologist, since knowing is a social state, and knowledge is a social status, needing a position in a social network. | |
| From: Martin Kusch (Knowledge by Agreement [2002], Ch. 4) | |
| A reaction: A nice test case. Would an omniscient mind have evidence for its beliefs? Would it continually check for coherence? Is it open to criticism? Does it even entertain the possibility of error? Could another 'omniscient' mind challenge it? |
| 7905 | The Buddha sought ultimate reality and the final goal of existence in his meditations [Ashvaghosha] |
| Full Idea: Next the Boddhisatva, possessed of great skill in Transic meditation, put himself into a trance, intent on discerning both the ultimate reality of things and the final goal of existence. | |
| From: Ashvaghosha (Buddhacarita [c.50], XIV.2) | |
| A reaction: The ontological and teleological goals of the Buddha were identical to the goals of the ancient Greek philosophers, and even we have teleological aims in our study of evolution. I would expect better results from the western approach. |
| 7909 | The Eightfold Path concerns morality, wisdom, and tranquillity [Ashvaghosha] |
| Full Idea: The Eightfold Path has three steps concerning morality - right speech, right bodily action, and right livelihood; three of wisdom - right views, right intentions, and right effort; and two of tranquillity - right mindfulness and right concentration. | |
| From: Ashvaghosha (Saundaranandakavya [c.50], XVI) | |
| A reaction: Most of this translates quite comfortably into the aspirations of western philosophy. For example, 'right effort' sounds like Kant's claim that only a good will is truly good (Idea 3710). The Buddhist division is interesting for action theory. |
| 7904 | The first stage of trance is calm amidst applied and discursive thinking [Ashvaghosha] |
| Full Idea: The first stage of trance is calm amidst applied and discursive thinking. | |
| From: Ashvaghosha (Buddhacarita [c.50], V.11) | |
| A reaction: Personally I am not sure that I would want to go any further that the first stage, since the elimination of discursive thinking seems to me to be approaching death. To pursue intense thinking very calmly I take to be the ideal of all western philosophers. |
| 7908 | At the end of a saint, he is not located in space, but just ceases to be disturbed [Ashvaghosha] |
| Full Idea: When an accomplished saint comes to the end, he does not go anywhere down in the earth or up in the sky, nor into any of the directions of space, but because his defilements have become extinct he simply ceases to be disturbed. | |
| From: Ashvaghosha (Saundaranandakavya [c.50], XVI) | |
| A reaction: To 'cease to be disturbed' is the most attractive account of heaven I have encountered. It all sounds a bit dull though. I wonder, as usual, how they know all this stuff. |