structure for 'Nature of Minds'    |     alphabetical list of themes    |     unexpand these ideas

15. Nature of Minds / B. Features of Minds / 1. Consciousness / d. Purpose of consciousness

[reasons why our minds are conscious]

12 ideas
To understand is the absolute virtue of the mind [Spinoza]
     Full Idea: To understand is the absolute virtue of the mind.
     From: Baruch de Spinoza (The Ethics [1675], IV Pr 28)
     A reaction: A possible epigraph for this website. Perhaps it should be required by law that this be printed on the frontispiece of every philosophy book ever published.
All of our normal mental life could be conducted without consciousness [Nietzsche]
     Full Idea: We could think, feel, will and remember, and we could also 'act', and yet none of this would have to enter our consciousness. The whole of life would be possible without, as it were, seeing itself in a mirror.
     From: Friedrich Nietzsche (The Gay (Joyful) Science [1882], §354)
     A reaction: He credits Leibniz with this line of thought. Nowadays the unconscious aspects of thought are a commonplace, not just from Freud, but from neuroscience. We have no idea how conscious other animals are. Nietzsche attributes consciousness to communication.
Only the need for communication has led to consciousness developing [Nietzsche]
     Full Idea: I surmise that consciousness has developed only under the pressure of the need for communication; ...consciousness is really only a net of communication between human beings.
     From: Friedrich Nietzsche (The Gay (Joyful) Science [1882], §354)
     A reaction: An interesting speculation, well ahead of its time. Given that thought does not require consciousness, as he claims, it is not quite clear why communication needs it. Presumably two robots can communicate. But Idea 20118 is good.
Consciousness exists to the extent that consciousness is useful [Nietzsche]
     Full Idea: Consciousness exists to the extent that consciousness is useful.
     From: Friedrich Nietzsche (Writings from Late Notebooks [1887], 02[95])
     A reaction: This strikes me as being a great truth, first because it emphasises the necessity of giving an evolutionary (survival) explanation of consciousness, and also because it invites us to consider the 'extent' to which we are conscious of brain activity.
Consciousness is a 'tool' - just as the stomach is a tool [Nietzsche]
     Full Idea: Consciousness is just a 'tool' and nothing more - in the same sense that the stomach is a tool.
     From: Friedrich Nietzsche (Writings from Late Notebooks [1887], 37[4])
     A reaction: Nietzsche was very critical of Darwin, but he absorbed his teachings quicker than anyone. I agree with this, and with Fodor (Idea 2508), that to understand a mind you must think about why we have minds.
Some activities are performed better without consciousness of them [Dretske]
     Full Idea: Some tasks (playing the piano, speaking foreign languages, playing fast sports) are best performed when the agent is largely unconscious of the details.
     From: Fred Dretske (Naturalizing the Mind [1997], Ch.4 n16)
     A reaction: A significant point, but it supports the evolutionary view, which is that what matters is success, and consciousness will switch on or off, whichever promotes the activity best.
Conscious creatures seem able to discriminate better [Searle]
     Full Idea: Apparently it is just a fact of biology that organisms that have consciousness have, in general, much greater powers of discrimination than those that do not.
     From: John Searle (The Rediscovery of the Mind [1992], Ch. 4.III)
     A reaction: This presupposes knowledge of which creatures are conscious. Clearly colour vision gives more information than monochrome vision. But presumably a computer could process more visual information than I could see. It doesn't have a fovea centralis.
There is consciousness whenever behaviour must be explained in terms of mental activity [Scruton]
     Full Idea: There is consciousness whenever behaviour must be explained in terms of mental activity.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.23)
     A reaction: Not a point that would trouble an eliminativist, as it sounds suspiciously circular or question-begging.
Can we explain behaviour without consciousness? [Chalmers]
     Full Idea: However the metaphysics of causation turns out, it seems relatively straightforward that a physical explanation of behaviour can be given that neither appeals to nor implies the existence of consciousness.
     From: David J.Chalmers (The Conscious Mind [1996], 2.5.2)
     A reaction: Chalmers needs this to support his idea that zombies are possible, but it strikes me as implausible. I find it inconceivable that our behaviour would be unchanged if we retained 'awareness' but lost consciousness. Try visiting an art gallery.
Consciousness can create new axioms, but computers can't do that [Edelman/Tononi]
     Full Idea: Conscious human thought can create new axioms, which a computer cannot do.
     From: G Edelman / G Tononi (Consciousness: matter becomes imagination [2000], Ch.17)
     A reaction: A nice challenge for the artificial intelligence community! I don't understand their confidence in making this assertion. Nothing in Gödel's Theorem seems to prevent the reassignment of axioms, and Quine implies that it is an easy and trivial game.
Consciousness is a malfunction of evolution [Zizek]
     Full Idea: Consciousness is a kind of mistake, a malfunction of evolution, and out of this mistake a miracle occurred.
     From: Slavoj Zizek (Conversations, with Glyn Daly [2004], §2)
     A reaction: Rather hard to prove, but actually quite an uplifting thought. If consciousness only evolved so that we could navigate and defend ourselves, our 'higher' activities seem irrelevant. But Zizek's view means we can make them central. Nice.
A very powerful computer might have its operations restricted by the addition of consciousness [Clark,T]
     Full Idea: It seems possible that if a powerful multi-tasking computer was then given consciousness, this might restrict its operations instead of enhancing them.
     From: Tom Clark (talk [2003]), quoted by PG - Db (ideas)
     A reaction: A nice thought, because it challenges the usual view - that consciousness brings huge intellectual liberty to a mind, and that a mind without it is necessarily restricted. Maybe consciousness is a bottleneck.