Dr Torley
discusses one of the points which has been important in the fight between Dr Feser and ID, namely the difference between natural substances and artifacts. Feser has been insisting that living substances are different in kind from artifacts and cannot be reduced to them, and that God should not be understood as an artificer. This gave rise to some discussion about whether God could make something readily recognizable as an artifact, like a 747 jet, and conversely, whether man could in principle produce life out of non-living materials. Torley here wants to distinguish between different kinds of substances according to whether or not they contain "complex specified information", and compares (1) a water molecule, (2) a bacterial cell, and (3) a mousetrap.
About (1) and (2) he writes: "This is a natural object, or substance. It is more than the sum of its parts. A water molecule has certain properties which cannot be reduced to those of its constituents."
I have to say that I'm not sure what the second and third sentence have to do with the first. Is a natural object defined as something which is more than the sum of its parts? Not for A-T, not for Scotus, not for Aristotle, and not for me. Recall that Aristotle defines nature as that which has the principle of its motion within itself. That is, the reason that a natural thing behaves as it does is because of something intrinsic to it that makes it act that way, rather than being moved extrinsically. When a rock falls down, it's acting naturally. It falls down all by itself. When it flies up, this is contrary to its nature. For a rock to go up something has to throw it, whether a person acting intentionally or a volcano or tornado or tsunami acting on it by chance.
Now about (3) Torley writes, "This is not a natural object. It is an assemblage of parts, and there are no “higher-level” holistic properties of a mousetrap which cannot be reduced to those of its constituents."
Again I must say that I don't see what the first and second sentences have to do with each other, though both are true. But lacking ""higher-level" holistic properties" is not what makes the mousetrap artificial.
Let's look at that rock again. Torley takes a single water molecule as his paradigm of a non-living natural substances, but most natural substances we deal with are things like raindrops, lakes, mountains, and rocks, rather than free-floating single molecules. But a rock is not natural because of higher-level holistic properties. It doesn't have any. A rock more or less is the sum of its parts. It's not an assemblage, like the mousetrap, but it is an aggregate. Whatever properties it has which cannot be reduced to those of its constituents are due to its bulk or shape, but these are accidental to its substantial form, which I will call rockness or "silexity". Now silexity certainly adds something over and above the forms of the bare elements and the subatomic constituents of the elements, but on an immediate level the rock is not an aggregate unity of elemental atoms, but of rock-parts. Similarly a lake is a lot of water collected in a large natural basin. It forms a kind of unity - for instance, we rightly speak of the depth or temperature or animal population of *the* lake - and it would be wrong to say that what really exists are the trillions of individual water molecules, which, as constituting the lake, are not individual at all, except potentially. Nevertheless the substantial form of the lake is that of water, not of lakeness, and if you scoop out a cup you still get water.
I don't want to go into the question of grades of unity for natural non-living substances, though it is to me a very interesting one. My point is that naturalness cannot be defined simply as whether a thing is more than the sum of its parts, where "more" means "having higher-order holistic properties" rather than "there's more of it". The rock is just as natural as the carbon atom.
Moving on. Torley goes on to write:
"[1]There are laws of nature that tend to produce water molecules, under certain circumstances. . . .[2] However, as far as we know, there are no laws of nature that tend to produce a bacterial cell, under any circumstances. . . . [3] There are no laws of nature that tend to produce a mousetrap, under any circumstances." [My numbering]
There seems to be something wrong with these three sentences. I agree with [1] and [3], but not [2], which makes me suspect that Torley doesn't mean at least [1] in the sense I would mean it either. It seems to me perfectly clear that there are in fact laws of nature that tend to produce bacteria, in all sorts of circumstances. This process is called "generation". According to Aristotelianism of all stripes, when a natural substance comes to be in a natural way, this is natural generation, whether the object is living or non-living. Water is generated from other elements just as animals are generated from other animals, and so forth. Now I realize that Torley is speaking in the context of producing something "in the lab", but his statement sounds awfully general. It just is the case that bacteria are generated naturally according to laws of nature, in this case biological laws.
Torley goes on to apply his principles to the case at hand:
"Scientists can take advantage of these laws to produce water molecules. For example, hydrogen and oxygen do not ordinarily combine at room temperature to produce water, but if scientists pass a spark through them, they will combine. . . . Hence, scientists cannot take advantage of any laws of nature to produce a bacterial cell. If they were to make one, they’d have to put it together, piece by piece, like a gigantic jigsaw puzzle where every part has to be in the right place. . . . Hence, scientists cannot take advantage of any laws to produce a mousetrap. If they wanted to make one, they’d have to assemble the parts together, one at a time."
It's not at all clear to me that this shows in any way that the bacterial cell is machine-like in the way that a mousetrap is. Torley seems to be doing what Feser has several times accused ID proponents in general of doing, which is to conflate
what a thing is with
how a thing came to be. Now whether a living thing can be put together in a lab piece by piece seems to me an empirical question. Presumably if one stuck a bunch of non-living goo in a dish it would ordinarily not come to life, just as hydrogen and oxygen do not normally combine to produce water. But what if you passed a spark through the goo, just like Dr Frankenstein did? Would it come to life or not? Is there a certain type or types of goo one could combine in the right proportions, and then pass a spark through, or perform some other operation on, to produce life? Personally I doubt it, but by all means try and see. But if it did come to life the operation of its origin would not in itself make it a machine. More on this in a moment.
First I'd also like to point out that it seems false to say that scientists "cannot take advantage of any laws to produce a mousetrap". Surely they take advantage of the laws of physics and mechanics? Is this merely quibbling? I'm not sure what is the relevance of "assembling the parts together, one at a time" to whether or not the laws of nature enter into the thing's construction. As I will say in a moment, I'm also not sure what the relevance is to whether the end-result is natural or artificial.
Torley writes: "A water molecule has no “good of its own”; it is not alive. Thus it has no immanent final causality. . . . A bacterial cell does have a “good of its own”; it is alive. Thus it has immanent final causality. . . . A mousetrap does not have a “good of its own”; it is not alive. Thus it has no immanent final causality."
I suspect that Dr Feser would agree with me when I say that being alive and having immanent final causality are not necessarily one and the same thing. For an Aristotelian, every natural substance whatever has an innate tendency to sustain itself in being and perform its natural operation. It's just that living things are by and large better at overcoming impediments to doing so.
Torley writes: "Is a water molecule made in a laboratory an artifact? That depends on how it’s made."
This seems to me to be a misunderstanding of what distinguishes natural from artificial things. Just as a natural thing is not defined as "being more than the sum of its parts", a natural thing is not characterized as "having come to be without an external agent". It seems wrong to say that you can show me two cups of water, indistinguishable from each other, and claim that one is natural and the other is artificial just because one cupful was harvested from a mountain stream and the other made in a lab. They're not two different kinds of things, they're both water! At least it's wrong for the purposes of the present discussion, because we're not asking about things'
origins right now but about their
being. Right now we're interested in what makes something an artificial machine, and whether something is an artificial machine is a fact about its essence, not about its origin.
If God were to create ex nihilo a tree and a 747 jet, in one and the same act of creation, still the tree would be natural and the 747 jet would be an artificial machine. This is because, no matter how they were created, the tree has its principle of motion intrinsic to itself, but the jet doesn't. The jet doesn't build itself, fly itself, or maintain itself, and left to itself it will act as though it is
nothing but the sum of its parts, a bunch of metal and other pieces in a complicated heap. What is natural in the jet is its parts, not their configuration. And this is true about the jet whether it was built piece-by-piece from the ground up or created as a whole.
In apparent contradiction to this, Torley writes, "What’s the upshot of all this? A thing can be alive (with a good of its own) and yet still be a true artifact, because its parts have no natural tendency to come together. A bacterial cell is unquestionably alive, but if it has been produced by scientists in a laboratory, then it is an artifact."
Again, Torley is talking about the
origin of a thing, when its origin appears to be irrelevant to
what it is. If the bacterial cell is truly alive, then its parts have a natural tendency to
be together. What distinguishes a living form is that it governs all of its parts from the top down - when the living thing is healthy the operations of all its parts are subordinated to the operations of the whole by the form of the whole. Jets or computers don't work that way. Each part operates according to the laws of physics or chemistry, and only work together to produce a result beyond any of them individually because of the way they have been connected externally.
If you object that the whole point of ID is to inquire precisely into how things arose, not to dispute about their essence once they already exist, I say that the only evidence being used to inquire into the origins of living things is to look at their essences - what they are and how they naturally behave. And it seems to me that if their essences are not machine-like then we cannot infer a machine-like origin for them. It seems, though, that Dr Torley is not in this post anyway talking about the essences of things, that is, of organisms, but about the essences of parts of these things, namely, the machine-like parts. Is this relevant? Stay tuned for the thrilling sequel!