97 ideas
5988 | Anaximander produced the first philosophy book (and maybe the first book) [Anaximander, by Bodnár] |
Full Idea: Anaximander was the first to produce a philosophical book (later conventionally titled 'On Nature'), if not the first to produce a book at all. | |
From: report of Anaximander (fragments/reports [c.570 BCE]) by István Bodnár - Anaximander | |
A reaction: Wow! Presumably there were Egyptian 'books', but this still sounds like a stupendous claim to fame. |
3798 | An overexamined life is as bad as an unexamined one [Dennett] |
Full Idea: The unexamined life may not be worth living, but the overexamined life is nothing to write home about either. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §4.2) | |
A reaction: Presumably he means a life which is all theory and no practice. Compare Idea 343. |
3801 | Rationality requires the assumption that things are either for better or worse [Dennett] |
Full Idea: We must assume that something matters - that some things are for better and some things are for worse, for without that our assumed rationality would have nothing on which to get a purchase. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §7.1) | |
A reaction: It does seem that rationality wouldn't exist as an activity without some value to motivate it. |
1496 | The earth is stationary, because it is in the centre, and has no more reason to move one way than another [Anaximander, by Aristotle] |
Full Idea: Something which is established in the centre and has equality in relation to the extremes has no more reason to move up than it has down or to the sides (so the earth is stationary) | |
From: report of Anaximander (fragments/reports [c.570 BCE], A26) by Aristotle - On the Heavens 295b11 |
14874 | Anaximander saw the contradiction in the world - that its own qualities destroy it [Anaximander, by Nietzsche] |
Full Idea: Anaximander discovers the contradictory character of our world: it perishes from its own qualities. | |
From: report of Anaximander (fragments/reports [c.570 BCE]) by Friedrich Nietzsche - Unpublished Notebooks 1872-74 19 [239] | |
A reaction: A lovely gloss on Anaximander, though I am not sure that I understand what Nietzsche means. |
14308 | We can bring dispositions into existence, as in creating an identifier [Dennett, by Mumford] |
Full Idea: We can bring a real disposition into existence, as in Dennett's case of a piece of cardboard torn in half, so that two strangers can infallibly identify one another. | |
From: report of Daniel C. Dennett (Consciousness Explained [1991], p.376) by Stephen Mumford - Dispositions 03.7 n37 | |
A reaction: Presumably human artefacts in general qualify as sets of dispositions which we have created. |
7384 | Words are fixed by being attached to similarity clusters, without mention of 'essences' [Dennett] |
Full Idea: We don't need 'essences' or 'criteria' to keep the meaning of our word from sliding all over the place; our words will stay put, quite firmly attached as if by gravity to the nearest similarity cluster. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.2) | |
A reaction: Plausible, but essentialism (which may have been rejuventated by a modern theory of reference in language) is not about language. It is offering an explanation of why there are 'similarity clusters. Organisms are too complex to have pure essences. |
2526 | Philosophers regularly confuse failures of imagination with insights into necessity [Dennett] |
Full Idea: The besetting foible of philosophers is mistaking failures of imagination for insights into necessity. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.25) |
3802 | Why pronounce impossible what you cannot imagine? [Dennett] |
Full Idea: You say you cannot imagine that p, and therefore declare that p is impossible. Mightn't that be hubris? | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §7.3) |
7374 | Light wavelengths entering the eye are only indirectly related to object colours [Dennett] |
Full Idea: The wavelengths of the light entering the eye are only indirectly related to the colours we see objects to be. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 12.2) | |
A reaction: This is obviously bad news for naďve realism, but I also take it as good support for the primary/secondary distinction. I just can't make sense of anyone claiming that colour exists anywhere else except in the brain. |
2523 | That every mammal has a mother is a secure reality, but without foundations [Dennett] |
Full Idea: Naturalistic philosophers should look with favour on the finite regress that peters out without foundations or thresholds or essences. That every mammal has a mother does not imply an infinite regress. Mammals have secure reality without foundations. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.25) | |
A reaction: I love this thought, which has permeated my thinking quite extensively. Logicians are terrified of regresses, but this may be because they haven't understood the vagueness of language. |
3795 | Causal theories require the "right" sort of link (usually unspecified) [Dennett] |
Full Idea: In causal theories of knowledge and reference, the causal chain between object and thought must be of the "right" sort - the nature of rightness to be specified later, typically. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §3.3 n14) | |
A reaction: This is now the standard objection to a purely causal account of reference. Which of the many causal chains causes the meaning? Knowledge of maths is a further problem for it. |
7369 | Brains are essentially anticipation machines [Dennett] |
Full Idea: All brains are, in essence, anticipation machines. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 7.2) | |
A reaction: This would necessarily, I take it, make them induction machines. So brains will only evolve in a world where induction is possible, which is one where there a lot of immediately apprehensible regularities. |
4608 | Minds are hard-wired, or trial-and-error, or experimental, or full self-aware [Dennett, by Heil] |
Full Idea: Dennett identifies a hierarchy of minds running from 'Darwinian' (hard-wired solutions to problems), to 'Skinnerian' (trial-and-error), to 'Popperian' (anticipating possible experience), to 'Gregorian' (self-conscious representation, probably linguistic). | |
From: report of Daniel C. Dennett (Kinds of Minds [1996]) by John Heil - Philosophy of Mind Ch.5 | |
A reaction: Interesting. The concept of an experiment seems a major step (assessing reality against an internal map), and the ability to think about one's own thoughts certainly strikes me as the mark of a top level mind. Maybe that is the importance of language. |
7393 | We can't draw a clear line between conscious and unconscious [Dennett] |
Full Idea: Even in our own case, we cannot draw the line separating our conscious mental states from our unconscious mental states. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 14.2) | |
A reaction: This strikes me as being a simple and self-evident truth, which anyone working on the brain takes for granted, but an awful lot of philosophers (stuck somewhere in the seventeenth century) can't seem to grasp. |
7367 | Perhaps the brain doesn't 'fill in' gaps in consciousness if no one is looking. [Dennett] |
Full Idea: Perhaps the brain doesn't actually have to go to the trouble of "filling in" anything with "construction" - for no one is looking. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 5.4) | |
A reaction: This a very nice point, because claims that the mind fills in in various psychological visual tests always has the presupposition of a person (or homunculus?) which is overseeing the visual experiences. |
4880 | Sentience comes in grades from robotic to super-human; we only draw a line for moral reasons [Dennett] |
Full Idea: 'Sentience' comes in every imaginable grade or intensity, from the simplest and most 'robotic', to the most exquisitely sensitive, hyper-reactive 'human'. We have to draw a line for moral policy, but it is unlikely we will ever discover a threshold. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.4) | |
A reaction: This is the only plausible view, if you take the theory of evolution seriously. We can even observe low-grade marginal sentience in our own minds, and then shoot up the scale when we focus our minds properly on an object. |
2528 | Does consciousness need the concept of consciousness? [Dennett] |
Full Idea: You can't have consciousness until you have the concept of consciousness. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.6) | |
A reaction: If you read enough Dennett this begins to sound vaguely plausible, but next day it sounds like an absurd claim. 'You can't see a tree until you have the concept of a tree?' When do children acquire the concept of consciousness? Are apes non-conscious? |
2525 | Maybe language is crucial to consciousness [Dennett] |
Full Idea: I continue to argue for a crucial role of natural language in generating the central features of consciousness. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.25) | |
A reaction: 'Central features' might beg the question. Dennett does doubt the consciousness of animals (1996). As I stare out of my window, his proposal seems deeply counterintuitive. How could language 'generate' consciousness? Would loss of language create zombies? |
7394 | Conscious events can only be explained in terms of unconscious events [Dennett] |
Full Idea: Only a theory that explained conscious events in terms of unconscious events could explain consciousness at all. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 14.4) | |
A reaction: This sounds undeniable, so it seems to force a choice between reductive physicalism and mysterianism. Personally I think there must be an explanation in terms of non-conscious events, even if humans are too thick to understand it. |
7391 | We can know a lot of what it is like to be a bat, and nothing important is unknown [Dennett] |
Full Idea: There is at least a lot that we can know about what it is like to be a bat, and Nagel has not given us a reason to believe there is anything interesting or theoretically important that is inaccessible to us. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 14.2) | |
A reaction: I agree. If you really wanted to identify with the phenomenology of bathood, you could spend a lot of time in underground caves whistling with your torch turned off. I can't, of course, be a bat, but then I can't be my self of yesterday. |
3158 | Theories of intentionality presuppose rationality, so can't explain it [Dennett] |
Full Idea: Intentional theory is vacuous as psychology because it presupposes and does not explain rationality or intelligence. | |
From: Daniel C. Dennett (Brainstorms:Essays on Mind and Psychology [1978], p.15?) | |
A reaction: Virtually every philosophical theory seems to founder because it presupposes something like the thing it is meant to explain. I agree that 'intentionality' is a slightly airy concept that would probably reduce to something better. |
2527 | Unconscious intentionality is the foundation of the mind [Dennett] |
Full Idea: It is on the foundation of unconscious intentionality that the higher-order complexities developed that have culminated in what we call consciousness. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.25) | |
A reaction: Sounds right to me. Pace Searle, I have no problem with unconscious intentionality, and the general homuncular picture of low levels building up to complex high levels, which suddenly burst into the song and dance of consciousness. |
6624 | Dennett denies the existence of qualia [Dennett, by Lowe] |
Full Idea: Dennett goes to the extreme of denying the existence of qualia altogether. | |
From: report of Daniel C. Dennett (Quining Qualia [1988]) by E.J. Lowe - Introduction to the Philosophy of Mind Ch.3 | |
A reaction: I sympathise with Dennett. Once you know how physically complex and rapid a quale is (about nine billion connections, all firing continuously), the notion that it seems to be some new 'thing', while just being a process, seems fine. Like a waterfall. |
4873 | What is it like to notice an uncomfortable position when you are asleep? [Dennett] |
Full Idea: What is it like to notice, while sound asleep, that your left arm has become twisted into a position in which it is putting undue strain on your left shoulder? Like nothing. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.1) | |
A reaction: A nice question, and all part of Dennett's accurate campaign to show that consciousness is not an all-or-nothing thing. As when we are barely aware of driving, innumerable things happen in the shadowy corners of thought. |
7387 | "Qualia" can be replaced by complex dispositional brain states [Dennett] |
Full Idea: "Qualia" can be replaced by complex dispositional states of the brain. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 14.1) | |
A reaction: 'Dispositional' reveals Dennett's behaviourist roots (he was a pupil of Ryle). Fodor is right that physicalism cannot just hide behind the word "complexity". That said, the combination of complexity and speed might add up to physical 'qualia'. |
7658 | Obviously there can't be a functional anaylsis of qualia if they are defined by intrinsic properties [Dennett] |
Full Idea: If you define qualia as intrinsic properties of experiences considered in isolation from all their causes and effects, logically independent of all dispositional properties, then they are logically guaranteed to elude all broad functional analysis. | |
From: Daniel C. Dennett (Sweet Dreams [2005], Ch.8) | |
A reaction: This is a good point - it seems daft to reify qualia and imagine them dangling in mid-air with all their vibrant qualities - but that is a long way from saying there is nothing more to qualia than functional roles. Functions must be exlained too. |
7376 | We can't assume that dispositions will remain normal when qualia have been inverted [Dennett] |
Full Idea: The goal of the experiment was to describe a case in which it was obvious that the qualia would be inverted while the reactive dispositions would be normalized. But the assumption that one could just tell is question-begging. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 12.4) | |
A reaction: It certainly seems simple and plausible that if we inverted our experience of traffic light colours, no difference in driver behaviour would be seen. However, my example, of a conversation in a gallery of abstract art, seems more problematic. |
7372 | In peripheral vision we see objects without their details, so blindsight is not that special [Dennett] |
Full Idea: If a playing card is held in peripheral vision, we can see the card without being able to identify its colours or its shapes. That's normal sight, not blindsight, so we should be reluctant on those grounds to deny visual experience to blindsight subjects. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 11.4) | |
A reaction: This is an important point in Dennett's war against the traditional all-or-nothing view of mental events. Nevertheless, blindsight subjects deny all mental experience, while picking up information, and peripheral vision never seems like that. |
7373 | Blindsight subjects glean very paltry information [Dennett] |
Full Idea: Discussions of blindsight have tended to ignore just how paltry the information is that blindsight subjects glean from their blind fields. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 11.4) | |
A reaction: This is a bit unfair, because blindsight has mainly pointed to interesting speculations (e.g. Idea 2953). Nevertheless, if blindsight with very high information content is actually totally impossible, the speculations ought to be curtailed. |
8143 | Self is the rider, intellect the charioteer, mind the reins, and body the chariot [Anon (Upan)] |
Full Idea: Know that the Self (Atman) is the rider, and the body the chariot; that the intellect is the charioteer, and the mind the reins. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: This strikes me as exactly right. Even my intellectual powers are servants of the self. This suggests the view of the mind as a tool, which does not seem to occur in modern discussions. |
3797 | I am the sum total of what I directly control [Dennett] |
Full Idea: Control is the ultimate criterion of the self: I am the sum total of the parts I control directly. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §4.2) | |
A reaction: This looks awfully like a flagrant self-contradiction, and I think it is. It seems pretty obvious that there is at least a distinction between the bit or bits that do the controlling, and the bits that get controlled. |
7385 | People accept blurred boundaries in many things, but insist self is All or Nothing [Dennett] |
Full Idea: Many people are comfortable taking the pragmatic approach to night/day, living/nonliving and mammal/premammal, but get anxious about the same attitude to having a self and not having a self. It must be All or Nothing, and One to a Customer. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.2) | |
A reaction: Personally I think I believe in the existence of the self, but I also agree with Dennett. I greatly admire his campaign against All or Nothing thinking, which is a relic from an earlier age. A partial self could result from infancy or brain damage. |
4881 | Being a person must involve having second-order beliefs and desires (about beliefs and desires) [Dennett] |
Full Idea: An important step towards becoming a person is the step up from a first-order intentional system to a second-order system (which has beliefs and desires about beliefs and desires). | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.5) | |
A reaction: Call it 'meta-thought'. I agree. Dennett thinks language is crucial to this, but the hallmark of intelligence and full-blown personhood is meta- and meta-meta-thought. Maybe the development of irony is a step up the evolutionary scale. Sarcasm is GOOD. |
7383 | The psychological self is an abstraction, not a thing in the brain [Dennett] |
Full Idea: Like the biological self, the psychological or narrative self is an abstraction, not a thing in the brain. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.1) | |
A reaction: Does Dennett have empirical evidence for this claim? It seems to me perfectly possible that there is a real thing called the 'self', and it is the central controller of the brain (involving propriotreptic awareness, understanding, and will). |
8147 | We have an apparent and a true self; only the second one exists, and we must seek to know it [Anon (Upan)] |
Full Idea: There are two selves, the apparent self, and the real Self. Of these it is the real Self (Atman), and he alone, who must be felt as truly existing. To the man who has felt him as truly existing he reveals his innermost nature. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: A central Hindu doctrine against which Buddhism rebelled, by denying the self altogether. I prefer the Hindu view. A desire to abandon the self just seems to be a desire for death. Knowledge of our essential self is more interesting. But see Idea 2932! |
7386 | Selves are not soul-pearls, but artefacts of social processes [Dennett] |
Full Idea: Selves are not independently existing soul-pearls, but artefacts of the social processes that create us, and, like other such artefacts, subject to sudden shifts in status. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.2) | |
A reaction: "Soul-pearls" is a nice phrase for the Cartesian view, but there can something between soul-pearls and social constructs. Personally I think the self is a development of the propriotreptic (body) awareness that even the smallest animals must possess. |
7381 | We tell stories about ourselves, to protect, control and define who we are [Dennett] |
Full Idea: Our fundamental tactic of self-protection, self-control and self-definition is telling stories, and more particularly concocting and controlling the story we tell others - and ourselves - about who we are. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.1) | |
A reaction: This seems to suggest that there is someone who wants to protect themselves, and who wants to tell the stories, and does tell the stories. No one can deny the existence of this autobiographical element in our own identity. |
7382 | We spin narratives about ourselves, and the audience posits a centre of gravity for them [Dennett] |
Full Idea: The effect of our string of personal narratives is to encourage the audience to (try to) posit a unified agent whose words they are, about whom they are: in short, to posit a centre of narrative gravity. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 13.1) | |
A reaction: What would be the evolutionary advantage of getting the audience to posit a non-existent self, instead of a complex brain? It might be simpler than that, since we say of a bird "it wants to do x". What is "it"? Some simple thing, like a will. |
7370 | The brain is controlled by shifting coalitions, guided by good purposeful habits [Dennett] |
Full Idea: Who's in charge of the brain? First one coalition and then another, shifting in ways that are not chaotic thanks to good meta-habits that tend to entrain coherent, purposeful sequences rather than an interminable helter-skelter power grab. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 8.1) | |
A reaction: This is probably the best anti-ego account available. Dennett offers our sense of self as a fictional autobiography, but the sense of a single real controller is very powerful. If I jump at a noise, I feel that 'I' have lost control of myself. |
7655 | The work done by the 'homunculus in the theatre' must be spread amongst non-conscious agencies [Dennett] |
Full Idea: All the work done by the imagined homunculus in the Cartesian Theater must be distributed among various lesser agencies in the brain, none of which is conscious. | |
From: Daniel C. Dennett (Sweet Dreams [2005], Ch.3) | |
A reaction: Dennett's account crucially depends on consciousness being much more fragmentary than most philosophers claim it to be. It is actually full of joints, which can come apart. He may be right. |
3800 | You can be free even though force would have prevented you doing otherwise [Dennett, by PG] |
Full Idea: If a brain implant would compel you to perform an action which you in fact freely choose, then you are free, but couldn't have done otherwise. | |
From: report of Daniel C. Dennett (Elbow Room: varieties of free will [1984], §6.1) by PG - Db (ideas) |
3803 | Can we conceive of a being with a will freer than our own? [Dennett] |
Full Idea: Can I even conceive of beings whose wills are freer than our own? | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §7.3) |
3791 | Awareness of thought is a step beyond awareness of the world [Dennett] |
Full Idea: The creature who is not only sensitive to patterns in its environment, but also sensitive to patterns in its own reactions to patterns in its environment, has taken a major step. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §2.2) |
3794 | Foreknowledge permits control [Dennett] |
Full Idea: Foreknowledge is what permits control. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §3.2) |
7379 | If an epiphenomenon has no physical effects, it has to be undetectable [Dennett] |
Full Idea: Psychologists mean a by-product by an 'epiphenomenon', ...but the philosophical meaning is too strong: it yields a concept of no utility whatsoever. Since x has no physical effects (according to the definition), no instrument can detect it. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 12.5) | |
A reaction: Well said! This has always been my half-formulated intuition about the claim that the mind (or anything) might be totally epiphenomenal. All a thing such as the reflection on a lake can be is irrelevant to the functioning of that specified system. |
7365 | Dualism wallows in mystery, and to accept it is to give up [Dennett] |
Full Idea: Given the way dualism wallows in mystery, accepting dualism is giving up. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 2.4) | |
A reaction: Some things, of course, might be inherently mysterious to us, and we might as well give up. The big dualist mystery is the explanation of how such different substances can interact. How do two physical substances manage to interact? |
3159 | Beliefs and desires aren't real; they are prediction techniques [Dennett] |
Full Idea: Intentional systems don't really have beliefs and desires, but one can explain and predict their behaviour by ascribing beliefs and desires to them. This strategy is pragmatic, not right or wrong. | |
From: Daniel C. Dennett (Brainstorms:Essays on Mind and Psychology [1978], p.7?) | |
A reaction: If the ascription of beliefs and desires explains behaviour, then that is good grounds for thinking they might be real features of the brain, and even if that is not so, they are real enough as abstractions from brain events, like the 'economic climate'. |
3796 | The active self is a fiction created because we are ignorant of our motivations [Dennett] |
Full Idea: Faced with our inability to 'see' where the centre or source of our free actions is,…we exploit the gaps in our self-knowledge by filling it with a mysterious entity, the unmoved mover, the active self. | |
From: Daniel C. Dennett (Elbow Room: varieties of free will [1984], §4.1) | |
A reaction: I am convinced that there is no such things as free will; its origins are to be found in religion, where it is a necessary feature of a very supreme God. I don't believe for a moment that we need to believe in free will. |
3161 | If mind is just an explanation, the explainer must have beliefs [Rey on Dennett] |
Full Idea: If something has beliefs only if something else is disposed to "treat it" (i.e. think of it) as though it does, then we seem at least to have an infinite regress of appeals to believers. | |
From: comment on Daniel C. Dennett (works [1985]) by Georges Rey - Contemporary Philosophy of Mind 3.2.1 | |
A reaction: This sounds like a serious difficulty for behaviourists, but is not insurmountable. We need a community of interlocking behaviours, with a particular pattern of behaviour being labelled (for instrumental convenience) as 'beliefs'. |
3986 | The 'intentional stance' is a way of interpreting an entity by assuming it is rational and self-aware [Dennett] |
Full Idea: The 'intentional stance' is the tactic of interpreting an entity by adopting the presupposition that it is an approximation of the ideal of an optimally designed (i.e. rational) self-regarding agent. | |
From: Daniel C. Dennett (Daniel Dennett on himself [1994], p.239) | |
A reaction: This is Dennett's 'instrumentalism', a descendant of behaviourism, which strikes me as a pragmatist's evasion of the ontological problems of mind which should interest philosophers |
2530 | Could a robot be made conscious just by software? [Dennett] |
Full Idea: How could you make a robot conscious? The answer, I think, is to be found in software. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.6) | |
A reaction: This seems to be a commitment to strong AI, though Dennett is keen to point out that brains are the only plausible implementation of such software. Most find his claim baffling. |
7371 | All functionalism is 'homuncular', of one grain size or another [Dennett] |
Full Idea: All varieties of functionalism can be viewed as 'homuncular' functionalism of one grain size or another. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 9.2) | |
A reaction: This seems right, as any huge and complex mechanism (like a moon rocket) will be made up of some main systems, then sub-systems, then sub-sub-sub.... This assumes that there are one or two overarching purposes, which there are in people. |
4875 | We descend from robots, and our intentionality is composed of billions of crude intentional systems [Dennett] |
Full Idea: We are descended from robots, and composed of robots, and all the intentionality we enjoy is derived from the more fundamental intentionality of billions of crude intentional systems. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.2) | |
A reaction: A more grand view of intentionality (such as Searle's) seems more attractive than this, but the crucial fact about Dennett is that he takes the implications of evolution much more seriously than other philosophers. He's probably right. |
4879 | There is no more anger in adrenaline than silliness in a bottle of whiskey [Dennett] |
Full Idea: There is no more fear or anger in adrenaline than there is silliness in a bottle of whiskey. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.3) | |
A reaction: Not exactly an argument, but a nice rhetorical point against absurd claims about identity and reduction and elimination. We may say that there is no fear without adrenaline, and no adrenaline in a live brain without fear. |
7657 | Intelligent agents are composed of nested homunculi, of decreasing intelligence, ending in machines [Dennett] |
Full Idea: As long as your homunculi are more stupid and ignorant than the intelligent agent they compose, the nesting of homunculi within homunculi can be finite, bottoming out, eventually, with agents so unimpressive they can be replaced by machines. | |
From: Daniel C. Dennett (Sweet Dreams [2005], Ch.6) | |
A reaction: [Dennett first proposed this in 'Brainstorms' 1978]. This view was developed well by Lycan. I rate it as one of the most illuminating ideas in the modern philosophy of mind. All complex systems (like aeroplanes) have this structure. |
7656 | I don't deny consciousness; it just isn't what people think it is [Dennett] |
Full Idea: I don't maintain, of course, that human consciousness does not exist; I maintain that it is not what people often think it is. | |
From: Daniel C. Dennett (Sweet Dreams [2005], Ch.3) | |
A reaction: I consider Dennett to be as near as you can get to an eliminativist, but he is not stupid. As far as I can see, the modern philosopher's bogey-man, the true total eliminativist, simply doesn't exist. Eliminativists usually deny propositional attitudes. |
7366 | It is arbitrary to say which moment of brain processing is conscious [Dennett] |
Full Idea: If one wants to settle on some moment of processing in the brain as the moment of consciousness, this has to be arbitrary. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 5.3) | |
A reaction: Seems eliminativist, as it implies that all that is really going on is 'processing'. But there are two senses of 'arbitrary' - that calling it consciousness is arbitrary (wrong), or thinking that mind doesn't move abruptly into consciousness (right). |
7380 | Visual experience is composed of neural activity, which we find pleasing [Dennett] |
Full Idea: All visual experience is composed of activities of neural circuits whose very activity is innately pleasing to us. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 12.6) | |
A reaction: This is the nearest I can find to Dennett saying something eliminativist. It seems to beg the question of who 'us' refers to, and what is being pleased, and how it is 'pleased' by these neural circuits. The Hard Question? |
4876 | Maybe there is a minimum brain speed for supporting a mind [Dennett] |
Full Idea: Perhaps there is a minimum speed for a mind, rather like the minimum escape velocity required to overcome gravity and leave the planet. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.3) | |
A reaction: Dennett rejects this speculation, but he didn't stop to imagine what it would be LIKE if your brain slowed down, and he never considers Edelman's view that mind is a process. Put the two together… |
4878 | The materials for a mind only matter because of speed, and a need for transducers and effectors [Dennett] |
Full Idea: I think there are only two good reasons why, when you make a mind, the materials matter: speed, and the ubiquity of transducers and effectors throughout the nervous system. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.3) | |
A reaction: This sounds roughly right, because it gives you something between multiple realisability (minds made of cans and string), and type-type identity (minds ARE a particular material). Call it 'biological functionalism'? |
3177 | You couldn't drive a car without folk psychology [Dennett] |
Full Idea: Folk psychology is indispensable for driving a car, which would be terrifying if we didn't assume there were psychologically normal people behind the wheels. | |
From: Daniel C. Dennett (works [1985]), quoted by Georges Rey - Contemporary Philosophy of Mind p.133 n35 | |
A reaction: Nice example. If someone is approaching you from the front on your side of the road, should you assume that they are 'psychologically normal'? Does psychology imply behaviour, or vice versa? |
3987 | Like the 'centre of gravity', desires and beliefs are abstract concepts with no actual existence [Dennett] |
Full Idea: Like such abstracta as centres of gravity and parallelograms of force, the beliefs and desires posited by the highest intentional stance have no independent and concrete existence. | |
From: Daniel C. Dennett (Daniel Dennett on himself [1994], p.239) | |
A reaction: I don't see why we shouldn't one day have a physical account of the distinctive brain events involved in a belief or a desire |
4874 | The predecessor and rival of the language of thought hypothesis is the picture theory of ideas [Dennett] |
Full Idea: The ancestor and chief rival of the language-of-thought hypothesis is the picture theory of ideas - that thoughts are about what they are about because they resemble their objects. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.2) | |
A reaction: When you place them side by side, neither seems quite right. How can a mental state resemble an object, and how can an inner language inherently capture the features of an object? Maybe we lack the words for the correct theory. |
2524 | A language of thought doesn't explain content [Dennett] |
Full Idea: Postulating a language of thought is a postponement of the central problems of content ascription, not a necessary first step. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.25) | |
A reaction: If the idea of content is built on the idea of representation, then you need some account of what the brain does with its representations. |
7654 | What matters about neuro-science is the discovery of the functional role of the chemistry [Dennett] |
Full Idea: Neuro-science matters because - and only because - we have discovered that the many different neuromodulators and other chemical messengers that diffuse throughout the brain have functional roles that make important differences. | |
From: Daniel C. Dennett (Sweet Dreams [2005], Ch.1) | |
A reaction: I agree with Dennett that this is the true ground for pessimism about spectacular breakthroughs in artificial intelligence, rather than abstract concerns about irreducible features of the mind like 'qualia' and 'rationality'. |
23803 | States have content if we can predict them well by assuming intentionality [Dennett, by Schulte] |
Full Idea: Dennett maintains that a system has states with representational content if we are able to predict its behaviour reliably and voluminously by adopting the intentional stance toward it. | |
From: report of Daniel C. Dennett (True Believers [1981]) by Peter Schulte - Mental Content 5 | |
A reaction: Dennett himself seems happy to thereby attribute representational content to a chess-playing computer. This sounds like a test for content, rather than explaining what it is. Not promising, I think. |
3984 | The nature of content is entirely based on its functional role [Dennett] |
Full Idea: All attributions of content are founded on an appreciation of the functional roles of the items in question. | |
From: Daniel C. Dennett (Daniel Dennett on himself [1994], p.239) | |
A reaction: This seems wrong to me. How can anything's nature be its function? It must have intrinsic characteristics in order to have the function. This is an evasion. |
8155 | Without speech we cannot know right/wrong, true/false, good/bad, or pleasant/unpleasant [Anon (Upan)] |
Full Idea: If there were no speech, neither right nor wrong would be known, neither the true nor the false, neither the good nor the bad, neither the pleasant nor the unpleasant. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Chandogya') | |
A reaction: This could stand as the epigraph for the whole of modern philosophy of language. However, the text goes on to say that mind is higher than speech. The test question is the mental capabilities of animals. Do they 'know' pleasure, or truth? |
4882 | Concepts are things we (unlike dogs) can think about, because we have language [Dennett] |
Full Idea: A dog cannot consider its concepts. Concepts are not things in a dog's world in the way that cats are. Concepts are things in our world, because we have language. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.6) | |
A reaction: Dogs must have concepts, though, or much of their behaviour (like desperation to go for a walk, or to eat) is baffling. This is as good a proposal as I have ever encountered for the value of language. Meta-thought is a huge evolutionary advantage. |
2529 | Maybe there can be non-conscious concepts (e.g. in bees) [Dennett] |
Full Idea: Concepts do not require consciousness. As Jaynes says, the bee has a concept of a flower, but not a conscious concept. | |
From: Daniel C. Dennett (Brainchildren [1998], Ch.6) | |
A reaction: Does the flower have a concept of rain? Rain plays a big functional role in its existence. It depends, alas, on what we mean by a 'concept'. |
8142 | The wise prefer good to pleasure; the foolish are drawn to pleasure by desire [Anon (Upan)] |
Full Idea: The wise prefer the good to the pleasant; the foolish, driven by fleshly desires, prefer the pleasant ot the good. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: If you consider appropriate diet, this is too obvious to be worth saying. The complication is that it is doubtful whether a life without pleasure is wholly good, and even the pleasure of food is not bad. Of two good foods, prefer the pleasant one. |
3983 | Learning is evolution in the brain [Dennett] |
Full Idea: Learning is evolution in the brain. | |
From: Daniel C. Dennett (Daniel Dennett on himself [1994], p.238) | |
A reaction: This is a rather non-conscious, associationist view, connected to Dawkins' idea of 'memes'. It seems at least partially correct. |
8151 | Let your teacher be a god to you [Anon (Upan)] |
Full Idea: Let your teacher be a god to you. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Taittiriya') | |
A reaction: Yes indeed. The problem in the west is that we are committed to encouraging a critical and questioning attitude. A high value for knowledge must precede a high value for a teacher. |
4872 | Most people see an abortion differently if the foetus lacks a brain [Dennett] |
Full Idea: If a fetus that is being considered for abortion is known to be anencephalic (lacking a brain), this dramatically changes the issue for most people, though not for all. | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.1) | |
A reaction: A very effective point, as it is hard to see what grounds could be given for not aborting in this case. But the brain then clearly becomes the focus of why abortion is often rejected by many people. |
7368 | Originally there were no reasons, purposes or functions; since there were no interests, there were only causes [Dennett] |
Full Idea: In the beginning there were no reasons; there were only causes. Nothing had a purpose, nothing had so much as a function; there was no teleology in the world at all. The explanation is simple: there was nothing that had interests. | |
From: Daniel C. Dennett (Consciousness Explained [1991], 7.2) | |
A reaction: It seems reasonable to talk of functions even if the fledgling 'interests' are unconscious, as in a leaf. Is a process leading to an end an 'interest'? What are the 'interests' of a person who is about to commit suicide? |
13222 | The Boundless cannot exist on its own, and must have something contrary to it [Aristotle on Anaximander] |
Full Idea: Those thinkers are in error who postulate ...a single matter, for this cannot exist without some 'perceptible contrariety': this Boundless, which they identify with the 'original real', must be either light or heavy, either hot or cold. | |
From: comment on Anaximander (fragments/reports [c.570 BCE]) by Aristotle - Coming-to-be and Passing-away (Gen/Corr) 329a10 | |
A reaction: A dubious objection, I would say. If there has to be a contrasting cold thing to any hot thing, what happens when the cold thing is removed? |
404 | Things begin and end in the Unlimited, and are balanced over time according to justice [Anaximander] |
Full Idea: The non-limited is the original material of existing things; their source is also that to which they return after destruction, according to necessity; they give justice and make reparation to each other for injustice, according to the arrangement of Time. | |
From: Anaximander (fragments/reports [c.570 BCE], B1), quoted by Simplicius - On Aristotle's 'Physics' 24.13- | |
A reaction: Simplicius is quoting Theophrastus |
405 | The essential nature, whatever it is, of the non-limited is everlasting and ageless [Anaximander] |
Full Idea: The essential nature, whatever it is, of the non-limited is everlasting and ageless. | |
From: Anaximander (fragments/reports [c.570 BCE], B2), quoted by (who?) - where? |
1495 | Anaximander introduced the idea that the first principle and element of things was the Boundless [Anaximander, by Simplicius] |
Full Idea: Anaximander said that the first principle and element of existing things was the boundless; it was he who originally introduced this name for the first principle. | |
From: report of Anaximander (fragments/reports [c.570 BCE], A09) by Simplicius - On Aristotle's 'Physics' 9.24.14- | |
A reaction: Simplicius is quoting Theophrastus |
8153 | By knowing one piece of clay or gold, you know all of clay or gold [Anon (Upan)] |
Full Idea: By knowing one lump of clay, all things made of clay are known; by knowing a nugget of gold, all things made of gold are known. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Chandogya') | |
A reaction: I can't think of a better basic definition of a natural kind. There is an inductive assumption, of course, which hits trouble when you meet fool's gold, or two different sorts of jade. But the concept of a natural kind is no more than this. |
1746 | The parts of all things are susceptible to change, but the whole is unchangeable [Anaximander, by Diog. Laertius] |
Full Idea: The parts of all things are susceptible to change, but the whole is unchangeable. | |
From: report of Anaximander (fragments/reports [c.570 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 02.An.2 |
8154 | Originally there must have been just Existence, which could not come from non-existence [Anon (Upan)] |
Full Idea: In the beginning there was Existence, One only, without a second. Some say that in the beginning there was non-existence only, and that out of that the universe was born. But how could such a thing be? How could existence be born of non-existence? | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Chandogya') | |
A reaction: A very rare instance of an argument in the Upanishads, arising out of a disagreement. The monotheistic religions have preferred to make God the eternal element, presumably because that raises his status, but is also explains the start as a decision. |
3985 | Biology is a type of engineering, not a search for laws of nature [Dennett] |
Full Idea: Biology is not a science like physics, in which one should strive to find 'laws of nature', but a species of engineering. | |
From: Daniel C. Dennett (Daniel Dennett on himself [1994], p.239) | |
A reaction: Yes. This is also true of chemistry, which has always struck me as minitiarised car mechanics. |
4877 | Maybe plants are very slow (and sentient) animals, overlooked because we are faster? [Dennett] |
Full Idea: Might plants just be 'very slow animals', enjoying sentience that has been overlooked by us because of our human timescale chauvinism? | |
From: Daniel C. Dennett (Kinds of Minds [1996], Ch.3) | |
A reaction: Delightful thought, arising from pondering the significance of the speed of operation of the brain. I think it is false, because I think high speed is essential to mind, and Dennett seems not to. |
3804 | Darwin's idea was the best idea ever [Dennett] |
Full Idea: If I were to give an award for the single best idea anyone has ever had, I'd give it to Darwin. | |
From: Daniel C. Dennett (Darwin's Dangerous Idea [1995], §1.1) |
8148 | Brahma, supreme god and protector of the universe, arose from the ocean of existence [Anon (Upan)] |
Full Idea: Out of the infinite ocean of existence arose Brahma, first-born and foremost among the gods. From him sprang the universe, and he became its protector. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Mundaka') | |
A reaction: Brahma does not have eternal (or necessary) existence. Could Brahma cease to exist? I suppose we cannot ask what caused the appearance of Brahma? Is it part of a plan, or just luck, or some sort of necessity? |
8144 | Brahman is the Uncaused Cause [Anon (Upan)] |
Full Idea: Brahman is the Uncaused Cause. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: This precedes Aquinas (Idea 1430) by over two thousand years. The theological trick is to admit one Uncaused Cause, but somehow exclude further instances, such as my bicycle getting a puncture. Does this undermine the Principle of Sufficient Reason? |
8152 | Earth, food, fire, sun are all forms of Brahman [Anon (Upan)] |
Full Idea: Earth, food, fire, sun - all these that you worship - are forms of Brahman. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Chandogya') | |
A reaction: In 'Taittiriya' food is named as the "chief of all things". Pantheism seems to arise from a desire that one's god should have every conceivable good, so in addition to power and knowledge, your god must keep you warm and healthy. |
8156 | The gods are not worshipped for their own sake, but for the sake of the Self [Anon (Upan)] |
Full Idea: It is not for the sake of the gods, my beloved, that the gods are worshipped, but for the sake of the Self (Atman). | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Brihadaranyaka') | |
A reaction: There is an uneasy selfish streak in all religions, which conflicts with their exhorations to altruism, and to the love of the gods. It also occurs in the exhortation of Socrates to be virtuous. 'Pure' altruism seems only to arise in the 18th century. |
8157 | A man with desires is continually reborn, until his desires are stilled [Anon (Upan)] |
Full Idea: A man acts according to desires; after death he reaps the harvest of his deeds, and returns again to the world of action. Thus he who has desires continues subject to rebirth, but he in who desire is stilled suffers no rebirth. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Brihadaranyaka') | |
A reaction: I greatly prefer the Stoic idea (Idea 3066) that we should live according to nature, to this perverse longing to completely destroy our own nature and become something we are not. Play the cards you are dealt, which include desires. |
8159 | Damayata - be self-controlled! Datta - be charitable! Dayadhwam - be compassionate! [Anon (Upan)] |
Full Idea: The storm-clouds thunder: Da! Da! Da! Damayata - be self-controlled! Datta - be charitable! Dayadhwam - be compassionate! | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Brihadaranyaka') | |
A reaction: Compassion seems to imply charity, so it comes down to 'Be self-controlled and compassionate'. Only the wildest romantic could be against self-control. Only Nietzsche could be against compassion (Idea 4425). |
8145 | Those ignorant of Atman return as animals or plants, according to their merits [Anon (Upan)] |
Full Idea: Of those ignorant of the Self (Atman), some enter into beings possessed of wombs, others enter into plants - according to their deeds and the growth of their intelligence. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: "I sigh and sigh, and wish I were a tree" wrote George Herbert. You probably need the snobbery of the Indian caste system to appreciate the horrors of low rebirth. I quite fancy being a dolphin, but a tulip would be all right. |
8149 | Charity and ritual observance distract from the highest good of religion [Anon (Upan)] |
Full Idea: Considering religion to be observance of rituals and performance of acts of charity, the deluded remain ignorant of the highest good. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Mundaka') | |
A reaction: An important reminder. In all the great religious texts the exhortation to love and charity is a minor aspect. The point is to live on a spiritual plain, attempting to relate the world of God/the gods. Daily life is either secondary or irrelevant. |
8158 | Do not seek to know Brahman by arguments, for arguments are idle and vain [Anon (Upan)] |
Full Idea: Do not seek to know Brahman by arguments, for arguments are idle and vain. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Brihadaranyaka') | |
A reaction: In the end all the religions seem to gravitate towards fideism and away from reasoned argument. The Catholic Church may be the last bastion of rational theology. Islam (10th cent), Protestantism (16th) and Judaism (17th) all rejected philosophy. |
8146 | The immortal in us is the part that never sleeps, and shapes our dreams [Anon (Upan)] |
Full Idea: That which is awake in us even while we sleep, shaping in dream the objects of our desire - that indeed is pure, that is Brahman, and that verily is called the Immortal. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Katha') | |
A reaction: That is a more helpful view of what the soul might be than anything found in Christian theology. It makes it the essence of the everyday Self. It is left with the difficulty of lacking individuality, and being of limited interest to my wider Self. |
8150 | The immortal Self and the sad individual self are like two golden birds perched on one tree [Anon (Upan)] |
Full Idea: Like two birds of golden plumage, the individual self and the immortal Self perch on the branches of the same tree. The individual self, deluded by forgetfulness of his identity with the divine self, bewildered by his ego, grieves and is sad. | |
From: Anon (Upan) (The Upanishads [c.950 BCE], 'Mundaka') | |
A reaction: Hinduism gives a much clearer and bolder picture of the soul than Christianity does. I don't see much consolation in the immortality of the wonderful Self, if my individual self is doomed to misery and extinction. Which one is me? |