12 ideas
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) |
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. |
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? |
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. |
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. |
7441 | Experiences are defined by their causal role, and causal roles belong to physical states [Lewis] |
Full Idea: The definitive characteristic of any experience is its causal role, its most typical causes and effects; but we materialists believe that these causal roles which belong by analytic necessity to experiences belong in fact to certain physical states. | |
From: David Lewis (An Argument for the Identity Theory [1966], §I) | |
A reaction: This is the Causal version of functionalism, which Armstrong also developed. The word 'typical' leads later to a teleological element in the theory (e.g. in Lycan). There are other things to say about mental states than just their causal role. |
7442 | 'Pain' contingently names the state that occupies the causal role of pain [Lewis] |
Full Idea: On my theory, 'pain' is a contingent name - that is, a name with different denotations in different possible worlds - since in any world, 'pain' names whatever state happens in that world to occupy the causal role definitive of pain. | |
From: David Lewis (An Argument for the Identity Theory [1966], §II n6) | |
A reaction: Better to say that 'pain' (like 'sound') is ambiguous. It is indiscriminately used by English-speakers to mean [1] the raw quale that we experience when damaged, and [2] whatever it is that leads to pain behaviour. Maybe frogs have 2 but not 1. |
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. |
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'. |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
Full Idea: Archelaus was the first person to say that the universe is boundless. | |
From: report of Archelaus (fragments/reports [c.450 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 02.Ar.3 |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |
Full Idea: Archelaus wrote that life on Earth began in a primeval slime. | |
From: report of Archelaus (fragments/reports [c.450 BCE]) by Malcolm Schofield - Archelaus | |
A reaction: This sounds like a fairly clearcut assertion of the production of life by evolution. Darwin's contribution was to propose the mechanism for achieving it. We should honour the name of Archelaus for this idea. |