On the Elusive Notion of a Set: Sets as Products of Collectings

In an important article, Max Black writes:

Beginners are taught that a set having three members is a single thing, wholly constituted by its members but distinct from them. After this, the theological doctrine of the Trinity as "three in one" should be child's play. ("The Elusiveness of Sets," Review of Metaphysics, June 1971, p. 615)

1. A set in the mathematical (as opposed to commonsense) sense is a single item 'over and above' its members. If the six shoes in my closet form a mathematical set, and it is not obvious that they do, then that set is a one-over-many: it is one single item despite its having six distinct members each of which is distinct from the set, and all of which, taken collectively, are distinct from the set.   A set with two or more members is not identical to one of its members, or to each of its members, or to its members taken together, and so the set  is distinct from its members taken together, though not wholly distinct from them: it is after all composed of them and its very identity and existence depends on them.

In the above quotation, Black is suggesting that mathematical sets are contradictory entities: they are both one and many.  A set is one in that it is a single item 'over and above' its members or elements as I have just explained.  It is many in that it is "wholly constituted" by its members. (We leave out of consideration the null set and singleton sets which present problems of their own.)  The sense in which sets are "wholly constituted" by their members can be explained in terms of the Axiom of Extensionality: two sets are numerically the same iff they have the same members and numerically different otherwise. Obviously, nothing can be both one and many at the same time and in the same respect.  So it seems there is a genuine puzzle here.  How remove it?

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Non-Empty Thoughts About the Empty Set

1. The empty or null set is a strange animal. It is a set, but it has no members. This is of course not a contingent fact about it, but one bound up with its very identity: the null set is essentially null. Intuitively, however, one might have thought that a set is a group of two or more things. Indeed, Georg Cantor famously defines a set (Menge) as "any collection into a whole (Zusammenfassung zu einem Ganzen) of definite and separate objects of our intuition and thought." (Contributions to the Founding of the Theory of Transfinite Numbers, Dover 1955, p. 85) In the case of the null set, however, there are no definite objects that it collects. So in what sense is the null set a set? One might ask a similar question about singletons, sets having exactly one member. But I leave this for later.

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Aquinas on Intellect’s Independence of Matter: Summa Contra Gentiles, II, 49, 8

In an earlier post on hylomorphic dualism, I said that

Aquinas cannot do justice to his own insight into the independence of the intellect from matter from within the hylomorphic scheme of ontological analysis he inherits from Aristotle. His metaphysica generalis is at war with his special-metaphysical insight into the independence of intellect from matter.

To help nail down half of this assertion, the half that credits the Common Doctor with insight, let's look at one of the arguments Aquinas gives for the intellect's independence of matter, the one at Summa Contra Gentiles, Book II, Chapter 49, Paragraph 8:

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Paul Churchland on Eliminative Materialism

The most obvious objection to eliminative materialism (EM) is that it denies obvious data, the very data without which there would be no philosophy of mind in the first place. Introspection directly reveals the existence of pains, beliefs, desires, anxieties, pleasures, and the like. Suppose I have a headache. The pain, qua felt, cannot be doubted or denied. Its esse is its percipi. To identify the pain with a brain state makes a modicum of sense; but it makes no sense at all to deny the existence of the very datum that got us discussing this topic in the first place. But Paul M. Churchland (Matter and Consciousness, rev. ed. MIT Press, 1988, pp. 47-48) has a response to this sort of objection:

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Seneca on Drinking

In this festive season it is perhaps appropriate that we should relax a little the bonds that tether us to the straight and narrow.  A fitting apologia for a bit of indulgence and even overindulgence  is found in Seneca, On Tranquility of Mind, XVII, 8-9, tr. Basore:

At times we ought to reach even the point of intoxication, not drowning ourselves in drink, yet succumbing to it; for it washes away troubles, and stirs the mind from its very depths and heals its sorrow just as it does certain ills of the body; and the inventor of wine is not called the Releaser [Liber, Bacchus] on account of the license it gives to the tongue, but because it frees the mind from bondage to cares and emancipates it and gives it new life and makes it bolder in all that it attempts. But, as in freedom, so in wine there is a wholesome moderation.

Sed ut libertatis ita vini salubris moderatio est.

. . .

Yet we ought not to do this often, for fear that the mind may contract an evil habit; nevertheless there are times when it must be drawn into rejoicing and freedom, and gloomy sobriety must be banished for a while.

The Manhattan Shot

Time was when I imbibed two ounces of alcohol per day. But abstemiousness has set in, and now I save the sauce for special occasions. But a favorite delivery form remains what I call the Manhattan shot.

Slam a respectably sized shot glass onto the counter. Fill it two thirds to three quarters with your bourbon of choice. Top it off with sweet vermouth, and finish it with two or three drops of Angosturo(anguish) bitters. Now, without engaging in any such tomfoolery as mixing, knock it back in one fluid gesture. Straight: no chaser, no cherry.

Repeat as necessary.

Eliminative Materialism Defined

A reader inquired about eliminative materialism. In this post I will explain what eliminative materialism is. In later posts, I will indicate why I consider it to be not only false, but irremediably incoherent.

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Envy, Jealousy, Schadenfreude

The older I get, the more two things impress me. One is the suggestibility of human beings, their tendency to imbibe and repeat ideas and attitudes from their social environment with nary an attempt at critical examination. The other is the major role envy plays in human affairs. Suggestibility is best left for another occasion as part of an analysis of political correctness.

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Schadenfreude with a Twist

To feel envy is to feel diminished by another's success or well-being. Schadenfreude is in a certain sense the opposite: it is to take pleasure or satisfaction in another's misfortune. An interesting case of Schadenfreude is pleasure in having incited envy in another.

Envy is a vice of propinquity. Envy erupts only among people who compare themselves with one another, and for comparison there must be propinquity or social proximity whether it be that of friends, relatives, neighbors, co-workers. Suppose A and B work in the same office, and A gets a promotion. That is a situation in which envy may arise. Suppose it does: B comes to feel diminished by A's success. Even though the change in B is 'merely Cambridge,' as the philosophers say, merely relational, and thus no real change at all, the real change occurring in A, B nonetheless and quite perversely feels bad that A has done well even though B's feeling bad does nothing to improve his lot, and indeed harms him by befouling his mind and predisposing him to acts worse than envy.

Spinoza on Commiseratio. Pity as a Wastebasket Emotion

To commiserate, to feel compassion, to pity — these come to the same. Might compassion  be a mistake? Suppose an evil befalls you. If I am in a position to help, then perhaps I ought to. But it is unnecessary that I 'feel your pain' to use a Clintonian expression. Indeed, my allowing myself to be affected might interfere with my rendering of aid. And even if it doesn't, the affect of pity is bad in itself. Why should I feel bad that you feel bad? Of course, I should not feel good that you feel bad; that would be the diabolical emotion of Schadenfreude.  The point is that I should not feel bad that you feel bad.  For it is better if only one of us suffer. Better that I should remain unaffected and unperturbed. That way, at least one of us displays ataraxia.

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Morality Private and Public: On Not Confusing Them

Socrates and Jesus are undoubtedly two of the greatest teachers of humanity. Socrates famously maintained that it is better to suffer injustice than to commit it, and Jesus, according to MT 5:39, enjoins us to "Resist not the evildoer" and "Turn the other cheek." No one with any spiritual sensitivity can fail to be deeply impressed by these sayings. It is equally clear that no one with common sense can suppose that they can be applied in the public sphere.

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How Ordinary Language Philosophy Rests on Logical Positivism

A while back I came across Ernest Gellner's Words and Things (unrevised ed., 1963). It is jam-packed with insights. Here is an example:

Linguistic Philosophy [O. L. philosophy] absolutely requires and presupposes [Logical] Positivism, for without it as a tacit premiss, there is nothing to exclude any metaphysical interpretation of the usages that are to be found, and allegedly "taken as they are," in the world. (p. 86)

Exactly right. For if the anti-metaphysics of logical positivism is not presupposed, how can the O.L. philosopher rule out as meaningless metaphysical ways of talking? People talk in all sorts of ways, not all of them mundane. People talk metaphysics for example. I do it all the time, and it certainly seems to me and some of my interlocutors that I am talking sense. For example, I say things like, 'Existence is a necessary condition of property-possession: nothing has properties unless it exists' and there are people who understand me.

On the Misuse of Religious Language

A massage parlor is given the name Nirvana, the implication being that after a well-executed massage one will be in the eponymous state. This betrays a misunderstanding of Nirvana, no doubt, but that is not the main thing, which is the perverse tendency to attach a religious or spiritual significance to a merely sensuous state of relaxation.

Why can’t the hedonist just enjoy his sensory states without glorifying them? Equivalently, why can’t he admit that there is something beyond him without attempting to drag it down to his level? But no! He wants to have it both ways: he wants both sensuous indulgence and spirituality. He wants sensuality to be a spiritual experience and spirituality to be as easy of access as sensuous enjoyment.

What’s in a Name?

Mike Gilleland's erudite disquisition on crappy names (craptronyms?) put me in mind of a chess opponent I once faced in a Las Vegas tournament. The fellow, a German, rejoiced under the name of David Assman. It would really have been a hoot had the tournament's venue been Fucking, Austria, near Salzburg. (If a major tournament can be held at Lone Pine, little more than a wide spot on old U.S. 395, why not there?) Yes, muchachos, there really is such a place. The name is pronounced 'fooking.' Although I lived as a young man in Salzburg for six months, I never got to Fucking.