Nagel and his critics, Part VI

We’ve been looking at the critics of Thomas Nagel’s recent book Mind and Cosmos.  Having examined the objections raised by Brian Leiter and Michael Weisberg, Elliott Sober, Alva Noë, and John Dupré, I want to turn now to some interesting remarks made by Eric Schliesser in a series of posts on Nagel over at the New APPS blog.  Schliesser’s comments concern, first, the way the scientific revolution is portrayed by Nagel’s critics, and second, the role the Principle of Sufficient Reason plays in Nagel’s book.  Most recently, in response to my own series of posts, Schliesser has also commented on the status of naturalism in contemporary philosophy.  Let’s look at each of these sets of remarks in turn.

Nagel and his critics, Part IV

Continuing our look at the critics of Thomas Nagel’s recent book Mind and Cosmos, we turn to philosopher Alva Noë’s very interesting remarks over at NPR’s 13.7: Cosmos & Culture blog.  Noë’s initial comments might seem broadly sympathetic to Nagel’s position.  He writes:

Science has produced no standard account of the origins of life.

We have a superb understanding of how we get biological variety from simple, living starting points. We can thank Darwin for that. And we know that life in its simplest forms is built up out of inorganic stuff. But we don't have any account of how life springs forth from the supposed primordial soup. This is an explanatory gap we have no idea how to bridge.

Science also lacks even a back-of-the-envelop [sic] concept explaining the emergence of consciousness from the behavior of mere matter. We have an elaborate understanding of the ways in which experience depends on neurobiology. But how consciousness arises out of the action of neurons, or how low-level chemical or atomic processes might explain why we are conscious — we haven't a clue.

We aren't even really sure what questions we should be asking.

These two explanatory gaps are strikingly similar… In both cases we have large-scale phenomena in view (life, consciousness) and an exquisitely detailed understanding of the low-level processes that sustain these phenomena (biochemistry, neuroscience, etc). But we lack any way of making sense of the idea that the higher-level phenomena just come down to, or consist of, what is going on at the lower level.

Nagel and his critics, Part III

In the previous installment in this series of posts on Thomas Nagel’s Mind and Cosmos, I looked at some objections to Nagel raised by Brian Leiter and Michael Weisberg.  I want now to turn to Elliot Sober’s review in Boston Review.  To his credit, and unlike Leiter and Weisberg, Sober is careful to acknowledge that:

Nagel’s main goal in this book is not to argue against materialistic reductionism, but to explore the consequences of its being false.  He has argued against the -ism elsewhere, and those who know their Nagel will be able to fill in the details.

Sober then goes on to offer a brief summary of the relevant positions Nagel has defended in earlier works like his articles “What Is It Like to Be a Bat?” and “The Psychophysical Nexus.”  As I emphasized in my previous post, keeping these earlier arguments in mind is crucial to giving the position Nagel develops in Mind and Cosmos a fair reading.  Unfortunately, however, having reminded his readers of these earlier arguments of Nagel’s, Sober immediately goes on to ignore them.

Nagel and his critics, Part II

Whereas my First Things review of Thomas Nagel’s Mind and Cosmos accentuated the positive, the first post in this series put forward some criticisms of the book.  Let’s turn now to the objections against Nagel raised by Brian Leiter and Michael Weisberg in their review in The Nation.  

First some stage setting is in order.  As I indicated in the previous post, Mind and Cosmos is mostly devoted to the positive task of spelling out what a non-materialist version of naturalism might look like.  The negative task of criticizing materialist forms of naturalism is carried out in only a relatively brief and sketchy way, and here Nagel is essentially relying on arguments he and others have developed at greater length elsewhere.  Especially relevant for present purposes is a line of argument Nagel put forward in what is perhaps his most famous piece of writing -- his widely reprinted 1974 article “What Is It Like to Be a Bat?” -- and developed further in later works like The View From Nowhere.

Whose nature? Which law?

You’ve got your natural law.  You’ve got your natural rights.  You’ve got the state of nature.  Then there’s naturalism.  And laws of nature.  And the supernatural.  There’s St. Paul’s natural man and the Scholastics’ natura pura.  There’s nature and nature’s God.  There’s natural science, natural history, natural selection, natural theology, natural philosophy, and the philosophy of nature.  There’s the Baconian scientist putting nature on the rack, and Galileo telling us that the book of nature is written in the language of mathematics.  And let’s not forget the literal books, like Lucretius’s On the Nature of Things, Hume’s Treatise of Human Nature, Richard Rorty’s Philosophy and the Mirror of Nature, and Edward O. Wilson’s On Human Nature.  There’s Emerson’s essay “Nature.”  For fans of underground comics, there’s Mr. Natural; for fans of obscure superheroes too preposterous ever to get their own billion-dollar-grossing film adaptations, there’s Nature Boy.  There’s Oliver Stone’s movie Natural Born Killers and Robert Redford in The Natural.   There’s Ringo Starr singing “Act Naturally,”  Aretha Franklin’s “(You Make Me Feel Like) A Natural Woman,” the Steely Dan album Two Against Nature, and that stupid Gilbert O’Sullivan tune.  

There are natural disasters, natural resources, natural gas, and dying of natural causes.  There’s natural beauty, but also freaks of nature.  There’s going back to nature and getting a natural high.  There are Mother Nature, nature hikes, all natural foods, natural family planning and natural childbirth.  There’s the natural order, and second nature.  There are natural numbers.  There are all the examples I didn’t think of.  There are blog posts that are starting to sound like George Carlin routines.

Was Aquinas a dualist?

At the start of chapter 4 of Aquinas (the chapter on “Psychology”), I wrote:

As I have emphasized throughout this book, understanding Aquinas requires “thinking outside the box” of the basic metaphysical assumptions (concerning cause, effect, substance, essence, etc.) that contemporary philosophers tend to take for granted.  This is nowhere more true than where Aquinas’s philosophy of mind is concerned.  Indeed, to speak of Aquinas’s “philosophy of mind” is already misleading.  For Aquinas does not approach the issues dealt with in this modern philosophical sub-discipline in terms of their relevance to solving the so-called “mind-body problem.”  No such problem existed in Aquinas’s day, and for him the important distinction was in any case not between mind and body, but rather between soul and body.  Even that is potentially misleading, however, for Aquinas does not mean by “soul” what contemporary philosophers tend to mean by it, i.e. an immaterial substance of the sort affirmed by Descartes.  Furthermore, while contemporary philosophers of mind tend to obsess over the questions of whether and how science can explain consciousness and the “qualia” that define it, Aquinas instead takes what is now called “intentionality” to be the distinctive feature of the mind, and the one that it is in principle impossible to explain in materialistic terms.  At the same time, he does not think of intentionality in quite the way contemporary philosophers do.  Moreover, while he is not a materialist, he is not a Cartesian dualist either, his view being in some respects a middle position between these options.  But neither is this middle position the standard one discussed by contemporary philosophers under the label “property dualism.”  And so forth.

Animals are conscious! In other news, sky is blue, water wet

A reader calls my attention to a Discovery News story which breathlessly declares: 

A prominent group of scientists signs a document stating that animals are just as “conscious and aware” as humans are.  This is a big deal.

Actually, it is not a big deal, nor in any way news, and the really interesting thing about this story is how completely uninteresting it is.  Animals are conscious?  Anyone who has ever owned a pet, or been to the zoo, or indeed just knows what an animal is, knows that.  

OK, almost anyone.  Descartes notoriously denied it, for reasons tied to his brand of dualism.  And perhaps that is one reason someone might think animal consciousness remarkable.  It might be supposed that if you regard the human mind as something immaterial, you have to regard animals as devoid of consciousness, so that evidence of animal consciousness is evidence against the immateriality of the mind and thus a “big deal.”  This is not what the article says, mind you, but it is one way to make sense of why it presents the evidence of animal consciousness as if it were noteworthy.

Think, McFly, think!

As Aristotelians and Thomists use the term, intellect is that faculty by which we grasp abstract concepts (like the concepts man and mortal), put them together into judgments (like the judgment that all men are mortal), and reason logically from one judgment to another (as when we reason from all men are mortal and Socrates is a man to the conclusion that Socrates is mortal).  It is to be distinguished from imagination, the faculty by which we form mental images (such as a visual mental image of what your mother looks like, an auditory mental image of what your favorite song sounds like, a gustatory mental image of what pizza tastes like, and so forth); and from sensation, the faculty by which we perceive the goings on in the external material world and the internal world of the body (such as a visual experience of the computer in front of you, the auditory experience of the cars passing by on the street outside your window, the awareness you have of the position of your legs, etc.).

The metaphysics of bionic implants

Take a look at the classic title sequence of The Six Million Dollar Man.  Oscar Goldman (the bionic man’s superior in the Office of Scientific Intelligence) says the following in the famous voiceover:

Gentlemen, we can rebuild him.  We have the technology.  We have the capability to make the world's first bionic man.  Steve Austin will be that man.  Better than he was before.  Better, stronger, faster.

Now that raises an interesting philosophical question.  Aquinas holds that:

[T]here exists in everything the natural desire of preserving its own nature; which would not be preserved were it to be changed into another nature.  Consequently, no creature of a lower order can ever covet the grade of a higher nature; just as an ass does not desire to be a horse: for were it to be so upraised, it would cease to be itself. (Summa Theologiae I.63.3)

Now, Steve Austin loses an arm, an eye, and his legs.  They are replaced with artificial parts which allow him to surpass his previous levels of strength, speed, and visual distance perception.  Still, they are artificial.  His normal human organs are not restored; instead, he becomes a cyborg.   We might even suppose that he likes being one -- certainly to every teenage boy, and to some of us middle-aged types, the idea sure seems pretty cool.  So, is the bionic man a counterexample to Aquinas’s claim?  For isn’t a cyborg -- being “stronger, faster” than an ordinary human being -- also “better” than an ordinary human being?  And doesn’t the fact that someone might plausibly desire to be a cyborg show that a thing could desire to be another kind of thing?

The road from libertarianism

I have pretty much always been conservative.  For about a decade -- from the early 90s to the early 00s -- I was also a libertarian.  That is to say, I was a “fusionist”: someone who combines a conservative moral and social philosophy with a libertarian political philosophy.  Occasionally I am asked how I came to abandon libertarianism.  Having said something recently about how I came to reject atheism, I might as well say something about the other transition.

Concretizing the abstract

Eric Voegelin famously (if obscurely) characterized utopian political projects as attempts to “immanentize the eschaton.”   A related error -- and one that underlies not only political utopianism but scientism and its offspring -- might be called the tendency to “concretize the abstract.”  Treating abstractions as if they were concrete realities is something Alfred North Whitehead, in Science and the Modern World, labeled the “Fallacy of Misplaced Concreteness,” and what has also been called the “Reification Fallacy.”  It has been an occupational hazard of philosophy and science since the time of the Pre-Socratics.  The Aristotelian strain in Western thought formed a counterpoint to this “concretizing” tendency within the context of ancient philosophy, and also more or less inoculated Scholasticism against the tendency.  But it came roaring back with a vengeance with Galileo, Descartes, and their modern successors, and has dominated Western thought ever since.  Wittgenstein tried to put an end to it, but failed; for bad metaphysics can effectively be counteracted only by good metaphysics, not by no metaphysics.  And Aristotelianism is par excellence a metaphysics which keeps abstractions in their place.

The road from atheism

As most of my readers probably know, I was an atheist for about a decade -- roughly the 1990s, give or take.  Occasionally I am asked how I came to reject atheism.  I briefly addressed this in The Last Superstition.  A longer answer, which I offer here, requires an account of the atheism I came to reject.

I was brought up Catholic, but lost whatever I had of the Faith by the time I was about 13 or 14.  Hearing, from a non-Catholic relative, some of the stock anti-Catholic arguments for the first time -- “That isn’t in the Bible!”, “This came from paganism!”, “Here’s what they did to people in the Middle Ages!”, etc. -- I was mesmerized, and convinced, seemingly for good.  Sola scriptura-based arguments are extremely impressive, until you come to realize that their basic premise -- sola scriptura itself -- has absolutely nothing to be said for it.  Unfortunately it takes some people, like my younger self, a long time to see that.  Such arguments can survive even the complete loss of religious belief, the anti-Catholic ghost that carries on beyond the death of the Protestant body, haunting the atheist who finds himself sounding like Martin Luther when debating his papist friends. 

Philosophy of nature and philosophy of [fill in the blank]

A reader of my recent post on the philosophy of nature asks some excellent questions:

I wonder, where does the philosophy of physics and in general the philosophy of science fall in between the scheme of metaphysics and philosophy of nature?...

Also, where does the discussion on the topic of the laws of nature belong?  Is that also philosophy of nature? 

Let’s start with the question of how the philosophy of science is related to the philosophy of nature.  Recall from my recent post that as the middle ground field of the philosophy of nature gradually disappeared off the radar screen of modern philosophy, the disciplines on either side of it -- on the one hand, metaphysics and on the other, empirical science (in the modern rather than Aristotelian sense of “science”) -- came to seem the only possible avenues of investigation of reality.  Recall also that the methodology of metaphysics came to seem a matter of “conceptual analysis,” while any study with empirical content came to be identified as part of natural science.  The very notion that there could be a middle ground field of study with empirical foundations but arriving at necessary truths, thus transcending the contingent world described by physics, chemistry, etc. and pointing the way to metaphysics -- as Aristotelian philosophy of nature claims to do -- was largely forgotten.

Oerter on motion and the First Mover

George Mason University physicist Robert Oerter has completed his series of critical posts on my book The Last Superstition.  I responded to some of his remarks in some earlier posts of my own (here and here, with some further relevant comments here and here).  In this post I want to reply to what he says in his most recent remarks about the Aristotelian argument from motion to an Unmoved Mover of the world.

Oerter contra the principle of causality

The Scholastic principle of causality states that any potential, if actualized, must be actualized by something already actual.  (It is also sometimes formulated as the thesis that whatever is moved is moved by another or whatever is changed is changed by another.  But the more technical way of stating it is less potentially misleading for readers unacquainted with Scholastic thinking, who are bound to read things into terms like “motion” or “change” that Scholastic writers do not intend.)

In an earlier post I responded to an objection to the principle raised by physicist Robert Oerter, who has, at his blog, been writing up a series of critical posts on my book The Last Superstition.  Oerter has now posted two further installments in his series, which develop and defend his criticism of the principle of causality.  Let’s take a look.

Reading Rosenberg, Part X

And now we reach, at long last, the end of our detailed critical look at Alex Rosenberg’s The Atheist’s Guide to Reality.  In this final post I want to examine what Rosenberg has to say about a set of philosophical arguments he regards as “among the last serious challenges to scientism” (p. 228).  The arguments in question all entail that the realm of conscious experience -- what common sense says we know only “from inside” (p. 238), from a point of view “somewhere behind the eyes” (p. 222) -- cannot be accounted for in terms of neuroscience or physical science more generally.  In his treatment of these arguments, we get Rosenberg simultaneously at his best and at his worst.

Scruton on “neuroenvy”

We’ve had several occasions (e.g. here, here, and here) to examine the fallacies committed by those who suppose that contemporary neuroscience has radically altered our understanding of human nature, and even undermined our commonsense conception of ourselves as conscious, rational, freely choosing agents.  In a recent Spectator essay, Roger Scruton comments on the fad for neuroscientific pseudo-explanations within the humanities, labeling it “neuroenvy.”

How to animate a corpse

One of the downsides of being a philosopher is that it makes it harder to suspend disbelief when watching horror flicks.  Plot holes become more glaring and speculations seem wilder when one’s business is looking for fallacies.  On the other hand, there is nothing so absurd but some philosopher has said it; hence there’s no one better placed to find a way to make even the most preposterous yarn seem at least remotely plausible.  A case in point, submitted for your approval: My take on a segment from Rod Serling’s Night Gallery, adapted from H. P. Lovecraft’s short story “Cool Air.”  (You can find it on Hulu and YouTube.)  Watching it for the first time recently, I was annoyed by what at first seemed to me an obviously nonsensical twist ending.  On further reflection, there is a way to make sense of it, if one makes the appropriate metaphysical assumptions.

The metaphysics of romantic love

Traditional natural law theory is often accused of reducing sexual morality to mere anatomy, the proper fitting together of body parts.  The charge is unjust.  To be sure, because we are animals of a sort, the natural ends of our bodily organs cannot fail to be partially definitive of what is good for us.  But because we are rational animals, our bodily goods take on a higher significance, participating in our intellectual and volitional powers.  These goods, the rational and the bodily, cannot be sundered or compartmentalized, because man is a unity, not a ghost in a machine.  Even eating participates in our rationality -- food becomes cuisine, and a meal becomes in the normal case a social occasion.  Sex is no different, and the ends toward which it is aimed by nature are as rational, as distinctively human, as they are bodily and animal.

Point of contact

Bruce Charlton identifies six problems for modern Christian apologists, and proposes a solution.  His remarks are all interesting, but I want to focus on the first and most fundamental of the problems he identifies, which is that the metaphysical and moral knowledge that even pagans had in the ancient world can no longer be taken for granted:

Christianity is a much bigger jump from secular modernity than from paganism.  Christianity seemed like a completion of paganism - a step or two further in the same direction and building on what was already there: souls and their survival beyond death, the intrinsic nature of sin, the activities of invisible powers and so on.  With moderns there is nothing to build on (except perhaps childhood memories or alternative realities glimpsed through art and literature).