The scientific revolution of the 17th century, which has given rise to such extraordinary progress in the understanding of nature, depended on a crucial limiting step at the start: It depended on subtracting from the physical world as an object of study everything mental – consciousness, meaning, intention or purpose. The physical sciences as they have developed since then describe, with the aid of mathematics, the elements of which the material universe is composed, and the laws governing their behavior in space and time.
We ourselves, as physical organisms, are part of that universe, composed of the same basic elements as everything else, and recent advances in molecular biology have greatly increased our understanding of the physical and chemical basis of life. Since our mental lives evidently depend on our existence as physical organisms, especially on the functioning of our central nervous systems, it seems natural to think that the physical sciences can in principle provide the basis for an explanation of the mental aspects of reality as well — that physics can aspire finally to be a theory of everything.
However, I believe this possibility is ruled out by the conditions that have defined the physical sciences from the beginning. The physical sciences can describe organisms like ourselves as parts of the objective spatio-temporal order – our structure and behavior in space and time – but they cannot describe the subjective experiences of such organisms or how the world appears to their different particular points of view. There can be a purely physical description of the neurophysiological processes that give rise to an experience, and also of the physical behavior that is typically associated with it, but such a description, however complete, will leave out the subjective essence of the experience – how it is from the point of view of its subject — without which it would not be a conscious experience at all.
So the physical sciences, in spite of their extraordinary success in their own domain, necessarily leave an important aspect of nature unexplained. Further, since the mental arises through the development of animal organisms, the nature of those organisms cannot be fully understood through the physical sciences alone. Finally, since the long process of biological evolution is responsible for the existence of conscious organisms, and since a purely physical process cannot explain their existence, it follows that biological evolution must be more than just a physical process, and the theory of evolution, if it is to explain the existence of conscious life, must become more than just a physical theory.
Finally, since the long process of biological evolution is responsible for the existence of conscious organisms, and since a purely physical process cannot explain their existence, it follows that biological evolution must be more than just a physical process, and the theory of evolution, if it is to explain the existence of conscious life, must become more than just a physical theory.
If the mind isn't "physical" (again I despise using these terms, "physical" and "mental" as it is what creates the problem Nagel is pointing at), or isn't made of the same stuff as "out there", then how is it that they both interact at all? Again, we should be talking about causation, not "physical" and "mental" substances. — Harry Hindu
If an idealist says, "Everything out there is made of the same stuff as in here." and the materialist says, "Everything in here is made of the same stuff as out there.", then they are both saying the same thing. "Physical" and "mental" is a product of dualism and is what creates a problem where there isn't one. — Harry Hindu
This doesn't work, because we have experiences of things which aren't out there, and the things out there can't fully explain the things in here. — Marchesk
By making the argument that science can NEVER explain the mind, you are implying that they don't interact, for if science can explain the stuff out there, which interacts with the stuff in here, then why can't it explain the "in here", too?. When science does a good job of explaining all the other stuff, then why can't it explain the mind too? What makes it different? What is it that science will never get at? Is it that a "physical" explanation isn't good enough? What makes an explanation physical as opposed to something else?That different "stuff" can't interact is a nonsensical idea. It's only if you define those two sorts of stuff as incapable of interacting that the idea is supported. That the mental and physical can't interact is not supported by the concept of "causation" unless you limit causation to efficient cause. However, the concepts of will, intention, and final cause, demonstrate that such a restriction is unjustified. — Metaphysician Undercover
I'm trying to get at how the things which aren't out there interact with the things that are out there. Do you deny that your thoughts have an effect on things out there and vice versa? How is that possible? How is it possible that we can have a system of explanation for that stuff out here that doesn't apply to the things in here, if they both interact?This doesn't work, because we have experiences of things which aren't out there, and the things out there can't fully explain the things in here. — Marchesk
The excerpt sounds like something a 17th century scientist might say about humans never learning how to achieve space travel, or understand the secrets of disease. It's based in ignorance — Harry Hindu
This also isn't much different than the religious notion that we are someone separate from, or above, nature. Haven't we learned that this isn't the case? — Harry Hindu
Finally, since the long process of biological evolution is responsible for the existence of conscious organisms, and since a purely physical process cannot explain their existence, it follows that biological evolution must be more than just a physical process, and the theory of evolution, if it is to explain the existence of conscious life, must become more than just a physical theory.
I like Nagel, but I don't think it does follow. Or rather it does, given the condition that it must explain what it cannot explain. As if whatever I cannot see must be radically different from whatever I can see - because I cannot see it.[/i] — unenlightened
In a chapter on ‘Cognition’, he goes on to argue that the faculty of reason, by which he means the capacity (for a few of us) to intuit truths that are independent of the mind, such as mathematical or logical truths, cannot be explained by evolutionary theory alone. Neo-Darwinian theory must explain the appearance of faculties such as reason as somehow adaptive, but we cannot explain the capacity for insight into the truth in terms of adaptation for survival. And in a chapter on ‘Value’ Nagel argues that our capacity to make correct moral judgements is based on the objectivity of good and bad, it being an objective matter that certain actions are good and certain bad, which is similarly inexplicable in terms of materialism alone. For each of these broad areas – consciousness, cognition and value – Nagel sketches what might count as more satisfactory explanatory theories. One such sort of theory would be intentional – that God has set up the natural order is such a way that there is consciousness, that we can intuit the truth and know good and bad. But Nagel does not explore intentional theories as he does not believe in God. He plays with panpsychism – the theory that mind is somehow in everything – but does not find this kind of metaphysical theory very useful. His preferred tentative solution is what he calls ‘teleological naturalism’...the theory that the natural order is biased in some way towards the emergence of life and consciousness, as more-than-likely directions or potentials of development. He does not develop this theory but merely indicates that it might at least be along the right lines. — A Reviewer
It's interesting to ask yourself whether this dogma, which strikes me as manifestly absurd, is itself a scientific hypothesis at all, or if it has to be maintained, purely as a defense against any kind of teleological suggestion in evolutionary biology. — Wayfarer
By making the argument that science can NEVER explain the mind, you are implying that they don't interact... — Harry Hindu
(pp. 35-36)The modern mind-body problem arose out of the scientific revolution of the seventeenth century, as a direct result of the concept of objective physical reality that drove that revolution. Galileo and Descartes made the crucial conceptual division by proposing that physical science should provide a mathematically precise quantitative description of an external reality extended in space and time, a description limited to spatiotemporal primary qualities such as shape, size, and motion, and to laws governing the relations among them. Subjective appearances, on the other hand -- how this physical world appears to human perception -- were assigned to the mind, and the secondary qualities like color, sound, and smell were to be analyzed relationally, in terms of the power of physical things, acting on the senses, to produce those appearances in the minds of observers. It was essential to leave out or subtract subjective appearances and the human mind -- as well as human intentions and purposes -- from the physical world in order to permit this powerful but austere spatiotemporal conception of objective physical reality to develop.
Can someone explain the epiphenomenal ectoplasm problem to me? — Benkei
Epiphenomenal ectoplasm was proposed by Horgan and Lewis in 1983, in which they stated, a possible world (a world that could possibly exist) W is identical to our world in the distribution of all mental and physical characteristics (i.e. they are identical), except world W contains an experience called epiphenomenal ectoplasm that does not causally interact with that world. If supervenience physicalism is true, then such a world could not exist because a physical duplicate of the actual world (the world that is known to exist) could not possess an epiphenomenal ectoplasm.
It never ceases to amaze me, the ease with which people seem to assume that 'we're just animals', when the difference between h. sapiens, and every other creature is so manifestly and entirely obvious. It's kind of a cultural blind spot, an inability to recognise the obvious. — Wayfarer
After all, an explanation is what is required (not bits and pieces of research which may be relevant, accompanied with a vague psychological explanation of long term memory somehow being involved in learning). — Galuchat
since when is biology the most fundamental word in our self-interpretation? — t0m
Yes, science will never be able to explain "first person" experience in "first person" terms, but then it doesn't, and cannot ever, given its methodology, do, or even aim to do, that. — Janus
The success of science has increased the intuition that physicalism is true and a lot of research into biochemistry and neurobiology is pursued assuming these things can be quantified. — Benkei
And the success of philosophy is found in exposing this intuition as nonsense. As for assumptions, I'm sure every scientist knows what they say about you and me. — Galuchat
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