Sunday, January 11, 2009

Links and Notes

* One of the several things that has kept me busy recently is putting together my teaching evaluation portfolio for the year. I didn't like the old statement of teaching philosophy that I had on file, so I re-wrote it more to my taste. There's actually a lot more I wanted to say, but I had to keep it brief, which turned out to be the difficult and time-consuming part. I thought some readers might be interested in my view of teaching, so I put it online. I'm always interested in refining it, so comments are welcome.

* Under the Lateran treaties for the past 80 years, Vatican City essentially operated under Italian law: laws passed by the Italian parliament automatically went into effect in Vatican City. No more.

* Sir Peter Stothard, who actually writes good literary review pieces, discusses Chesterton's Father Brown stories.

* Father John Neuhaus died on January 8. "The Public Square" was always an interesting example of a relatively rare genre these days, the philosophical miscellany.

* Rebecca had an excellent post recently on that remarkable late nineteenth-century genius, Beatrix Potter. Potter, of course, is best known for her Peter Rabbit tales, but she was remarkable in other ways. For instance, as part of being something of a virtuoso amateur naturalist, she did a considerable amount of research into mycology. Potter quickly became convinced of the view that lichens were not a single organism but a double one, in which algae and fungi interacted symbiotically. Something like this idea had been suggested on the Continent, but it was usually thought that the relationship was parasitic, and in England it was not given much credence. She did some testing of the idea, and managed to get her paper on it read before the Linnaean Society. But it came to nothing, and she eventually withdrew it. Part of the reason seems to have been sexism (Potter herself was very convinced that some figures with whom she had to interact were misogynists, and it was still a time when Potter could not read her own paper before the Linnaean Society because women weren't allowed to be members or participants in the Society). From what I understand she also had difficulty with contamination of samples, and she seems to have concluded that more research needed to be done. And it was also a time where the role of the amateur scientist was passing; the enthusiasm in the days of John Herschel for the idea that science is something done, or capable of being done, by the whole of society had begun to pass, and amateur naturalists were no longer seen as having much to contribute to the discussion of professional scientists. The fact that she was a shy person, and like many shy people not especially adept in being either tactful or persuasive when she felt forced to state her opinion, may not have helped. The exact details, however, are unknown; we do not have Potter's paper, only some research notes and mentions in correspondence. In any case, that was that; Potter went on to other things, to the loss of mycology and the benefit of literature. Roy Watling has a paper discussing her mycological adventures (PDF) with a focus on her scientific practice. In the course of her mycological research she seems to have come across a great many things; for instance, there is some evidence that she independently discovered the antibacterial properties of penicillin.

* I think I linked to it before, but I still need to get around to reading it more closely: Mark Granovetter, The Strength of Weak Ties: A Network Theory Revisited (PDF)

False Statements and False Statements

An interesting discussion of falsehood in the Soliloquies, in which he makes the distinction between being falsely a statement and being a statement that is false. When you have the distinction in hand, it's pretty obvious; but if you don't, it takes some hard thinking to get to it.

R: Truth is that by which anything that is true is true?
A: Certainly.
R: Nothing is said to be true except what is not false?
A: It would be silly to doubt it.
R: Is not that false which has a certain likeness to something, but is not that to which it bears resemblance?
A: To nothing else would I more freely give the name of false. And yet that is commonly called false which is very unlike the true.
R: Undeniably. But there is always some imitation of the true.
A: But how? When we are told that Medea joined together winged serpents and sped through the air, there is no imitation of what is true. For the tale is not true, and there can be no imitation of what does not exist.
R: Quite right. But observe that a thing which does not exist cannot even be said to be false. If it is false it exists. If it does not exist it is not false.
A: Are we not, then, to say that that monstrous story about Medea is false?
R: Not exactly. If it is false, how is it monstrous?
A: Here is a surprising thing. When I hear of "Huge winged serpents joined together by a yoke" I am not to say it is false.
R: Of course you are, but that implies something that exists.
A: What exists?
R: The statement expressed in that verse.
A: And where is there any imitation of true in it?
R: Because it is stated as if Medea had really done it. A false statement is expressed exactly like a true one....
A: Now I understand that there is a great difference between mere statements and the objects about which statements are made....The falsehood lies not in our statement but in the material objects about which it is made.


Soliloquies
Book II, 29.

Friday, January 09, 2009

Counterexamples

I've always been puzzled at the crudeness with which analytic philosophers often handle counterexamples, and was thinking about it after having come across a seriously egregious bungling of counterexamples in my reading recently. Counterexamples are pretty common, and most people manage to muddle through them in a reasonably tolerable way, but there seems to me to be a lack of sophistication, as evidence by the sheer puzzlement with which people regard the relatively simple case of Hume's missing shade of blue, and sometimes straightforward incompetence, when handling them. Part of the problem, I think, is that everyone starts using them early, and no one really bothers to have in hand a good account of how they work; I never was taught one, nor have I met many people who show any indication of having been taught one.

This is related, I think, to a failure to appreciate the ramifications of the usual accounts of validity. There are tricky details in handling them, but roughly on these accounts validity is truth-preservation, where truth-preservation has the following characteristics:

(a) if all of the premises are assigned the value TRUE, the conclusion is assigned the value TRUE
(b) if the conclusion is assigned the value FALSE, at least one of the premises is assigned the value FALSE

The important point here is that these are characteristics that can only be had under inference rules; and since inference rules can vary from domain to domain, validity varies from domain to domain. This isn't really surprising; truth-preservation does not work exactly the same way in an intuitionistic system that it does in a classical, or an affine, or a linear system. And there are homelier examples; in some domains inference from part to whole will be truth-preserving, and in others it will be the fallacy of composition. But this has ramifications for counterexamples used to show invalidity; counterexamples can only show arguments invalid for the domains in which they can be identified. In another domain the counterexample might not exist and the very same argument might be valid. And so it is always crucial to know what domains are involved. This is one reason why the missing shade of blue is not a problem for Hume's thesis, for instance; it's a counterexample that only occurs in a domain other than that in which Hume is interested (the one he is interested in being that which contains only events that happen naturally and regularly). There are other reasons, of course, but it is one of them. For every counterexample, we have to ask: is this counterexample from the right domain? Often it is, but sometimes one finds counterexamples being treated as unproblematic when it actually isn't clear that they apply.

Often counterexamples get their bite not from being mere counterexamples, but from an implicit suggestion that goes with the counterexample that the counterexample comes from a domain that's relevant to the argument or its premises. Counterexamples work, in other words, on the condition that they are relevant (when accurately described, of course -- the fact that something can seem to be a counterexample only when misdescribed is what allows for what Lakatos calls 'monster adjustment', where one simply redescribes the example in a way that eliminates its appearance as a counterexample).

UPDATE: In the comments David Corfield reminds me of this discussion of mathematical difficulties and counterexamples at "n-Category Cafe".

Thursday, January 08, 2009

Truth and Beauty

I've been surprisingly busy of late. Will be back soon. Here's some Emily.

I Died for Beauty
by Emily Dickinson

I died for beauty, but was scarce
Adjusted in the tomb,
When one who died for truth was lain
In an adjoining room.

He questioned softly why I failed?
"For beauty," I replied.
"And I for truth,—the two are one;
We brethren are," he said.

And so, as kinsmen met at night,
We talked between the rooms,
Until the moss had reached our lips,
And covered up our names.

Monday, January 05, 2009

Boswell, December 1764

I have put up at Houyhnhnm Land the first part of the series I had promised on Boswell's interesting meetings with Rousseau and Voltaire in 1764. Here is the teaser:

James Boswell, best known for his biography of Samuel Johnson, had a very interesting December in 1764. In his tour of the Continent, Boswell had come to Switzerland, and there he met Rousseau and Voltaire. Unfortunately, he never had a chance to write up the meetings in good form, as he had with Johnson; but even though the interactions are scattered through journal entries, memoranda, and correspondence in cryptic form, it still provides a valuable sighting of the two philosophers in their natural habitat.


Read "A Very Boswell Christmas, Part I"

Sunday, January 04, 2009

A Poem Re-Draft and Three New Poem Drafts

The first is the re-draft.

Blue

I had a dream of Midas once,
where I touched and all was gold;
but then I went and woke myself
and shivered in the cold.

Everywhere I've been, I've been in trouble,
everywhere I go, it's just the same;
everything I do just ends in heartache;
everywhere I am, I'm still to blame.


I have an angel on my shoulder,
but he's not the trusty kind;
he's apt to up and leave me
when I get into a bind.

Everywhere I've been, I've been in trouble,
everywhere I go, it's just the same;
everything I do just ends in heartache;
everywhere I am, I'm still to blame.


I had a conscience once,
but it left me to my sin;
it went out to 'buy some cigarettes'
but never came back again.

Everywhere I've been, I've been in trouble,
everywhere I go, it's just the same;
everything I do just ends in heartache;
everywhere I am, I'm still to blame.


Thinking of You

In the miasma of my thought
I sometimes forget to think of you
And have to begin my thoughts anew
To think of you as I ought.

Under heavy burden of the care
That my imagination draws
I must calm my mind and pause
To remember that you are there.

Blessed God, Though I Should Die

Blessed God, though I should die,
I shall not weep nor tear my eye
If only you remember me;
And in the darkness of the night
When you are hidden from my sight
You whisper then to strengthen me.
When illness comes, this fool to slay,
In your arms I wait and pray,
From all these mortal chains set free;
When sudden evil like lightning falls
Or glory fades and fire palls,
Your love, and death, will make me free.

Unicorn

Make me, my Lady, a unicorn,
leaping out from primal morn,
auroral glory on my head,
and bind me with a girdle of sky
when I am to your beauty led
and I lay my head in your lap
to die.

The Last Neoplatonist

An interesting passage from Berkeley's Siris:

Text not available
Siris A Chain of Philosophical Reflexions and Inquiries Concerning the Virtues of Tar Water, and Divers Other Subjects Connected Together and Arising One from Another By George Berkeley, G. L. B. O. C., Thomas Prior

According to Berkeley, Plato and Aristotle are plausibly read as idealists (or is it rather that Berkeley is plausibly read as an intellectual descendant of Plato and Aristotle?). People who have never read in Berkeley beyond the limited selection of texts that come up in undergraduate philosophy classes completely overlook this side of him; this passage comes in the midst of a long argument attempting to show that his own position is consistent with Plato, Aristotle, and "the Aegyptians", a move that is more suggestive of the prisca theologia of Renaissance Neoplatonism than of Lockean empiricism. And that's not surprising: Berkeley is, in fact, closer to Neoplatonism than anything on every point except his empiricism. The empiricism has the interesting effect of qualifying his Neoplatonism -- whenever it comes up he makes fairly clear that it is approximate and speculative. But it doesn't shut it down.