Friday, November 16, 2007

Cold hands and 19th Century Americana

I was looking at this photo of Lincoln and noticed that the two guys he's with have their hands in their jackets. Then I started to think about this pose a bit and wondered why it shows up so much in old photos and paintings. I suppose I could just google it and find out, but I thought it'd be more fun to ask the grad-student useless trivia/nonsense postulation machine. Two questions:

(1) Why do guys in old photos pose this way?
(2) Should I start posing this way in pictures taken of me?

Wednesday, November 14, 2007

a relatively naive gripe about brain research

First, look at this article on what happened to some people who got fMRI'd and received politics-related stimuli. Or maybe just read this quotation, which gives the tenor of the piece:

When we showed subjects the words “Democrat,” “Republican” and “independent,” they exhibited high levels of activity in the part of the brain called the amygdala, indicating anxiety. The two areas in the brain associated with anxiety and disgust — the amygdala and the insula — were especially active when men viewed “Republican.” But all three labels also elicited some activity in the brain area associated with reward, the ventral striatum, as well as other regions related to desire and feeling connected.

Or this one:

Voters who rated Mrs. Clinton unfavorably on their questionnaire appeared not entirely comfortable with their assessment. When viewing images of her, these voters exhibited significant activity in the anterior cingulate cortex, an emotional center of the brain that is aroused when a person feels compelled to act in two different ways but must choose one. It looked as if they were battling unacknowledged impulses to like Mrs. Clinton.

Granted, there is some hedging in these claims. But I think it's clear that the intended interpretation of the data is: Activity in the insula indicates that men are disgusted by the Republican party. And likewise, mutatis mutandis, for the other trials.

Drawing conclusions about people's mental states from brain imaging is tricky for a lot of reasons, but isn't there a very basic confusion going on here? I mean that what (say) fMRI studies give us is information about brain activity given some emotional state (or whatever), where the emotional state is identified independently by subject report or reasonable assumption. So the studies tell us that the probability of B given E is very high. But the claims above are of the reverse form: that the probability of E given B is high, enough so for us to be confident that the subjects really are anxious, disgusted, etc., based upon their patterns of brain activity. And absent background assumptions, P(B|E) and P(E|B) are completely independent, so the one tells us nothing about the other.

Is it possible that these scientists are making such a basic confusion of reasoning? Are there important and reasonable assumptions that I don't know about? Because to my eye, articles like this are really just embarrassing exercises in stamping the imprimatur of brain-scanning techniques onto the messy phenomena of human choice.

Monday, October 29, 2007

GPC (and GBP)

A couple people have asked me where the GPC website is. It's here.
It's also linked from the "graduate program page" on the department website.

This Thursday we continue on with Streed on naturalism. Be there.

As for tonight: Go, Pack, Go!

Fires and Chocolate

I'm grateful to hear, via various and sundry sources, that everyone made it through the fires relatively safe and sound; here's hoping that smoke inhalation and cabin fever were the only negative consequences of the wildfires for UCSD philosophers. Oh yes, and not being able to see your students' smiling faces for an entire week!

Speaking of students, I was recently directed to the following article about a study from Northwestern about student evaluations:

http://www.dailyprincetonian.com/archives/2007/10/24/news/19128.shtml

It reminded me of two things, in particular:

(1) Why I wait to bring in the home-baked chocolate chip cookies until AFTER the evals; and
(2) Why student evals should always be taken with a grain of salt.

Ideally, our pedagogy will be developed enough that we'll be able to engage even the most reticent students in a way that stimulates them WITHOUT using chemicals :-) (For the more sarcastically inclined, a snarkier take on this study is at http://rateyourstudents.blogspot.com.)

Tuesday, October 23, 2007

Some bars probably aren't on fire

We should all do something social this week/weekend. I'm already feeling the cabin fever a bit. Any ideas?

Sunday, October 21, 2007

Analytic vs. Inspirational Philosophy

More from Richard Rorty, Achieving Our Country:

A humanistic discipline is in good shape only when it produces both inspiring works and works which contextualize, and thereby deromanticize and debunk, those inspiring works. So I think philosophy, as an academic discipline, was in better shape when it had room for admirers of Whitehead as well as admirers of Ayer. I think that literature departments were in better shape when people of [Harold] Bloom's and [Dorothy] Allison's sort had a better chance than, I am told, they now have of being allowed to spend their teaching lives reiterating their idiosyncratic enthusiasms for their favorite prophets and demiurges. People of that sort are the ones [Frederic] Jameson thinks outdated, because they are still preoccupied with what he calls the "bourgeois ego." They are people whose motto is Wordsworth's "What we have loved/Others will love, and we will teach them how." This kind of teaching is different from the kind that produces knowingness, or technique, or professionalism.

Of course, if such connoisseurs of charisma were the only sort of teacher available, students would be short-changed. But they will also be short-changed if they only sort of teacher available is the knowing, debunking, nil admirari kind. We shall always need people in every discipline whose talents suit them for understanding rather than for hope, for placing a text in a context rather than celebrating its originality, and for detecting nonsense rather than producing it. But the natural tendency of professionalization and academicization is to favor a talent for analysis and problem-solving overt imagination, to replace enthusiasm with dry, sardonic knowingness. The dismalness of a lot of social science, and of a lot of analytic philosophy, is evidence of what happens when this replacement is complete.

Within the academy, the humanities have been a refuge for enthusiasts. If there is no longer a place for them within either philosophy or literature departments, it is not clear where they will find shelter in the future. People like Bloom and Allison---people who began devouring books as soon as they learned to read, whose lives were saved by books---may get frozen out of those departments. If they are, the study of the humanities will continue to produce knowledge, but it may no longer produce hope. Humanistic education may become what it was in Oxbridge before the reforms of the 1870s: merely a turnstile for admission to the overclass. (pp. 134-5)


Of course, this is Rorty at his best: sweeping, broad, visionary... and maybe a little overgeneralizing and incautious. The context of this is a chapter entitled "The Inspirational Value of Great Works of Literature," in which Rorty bemoans the trend in Literature towards cultural studies and "theory" and away from the appreciation of the Western canon. Now, on the one hand, the passage was published in 1998, and, on the other hand, I have no way to evaluate his claims about the trends in Lit, either then or since. But I feel a little more comfortable assessing his claims about philosophy, and I find both sets of claims interesting and inspiring.

As background, Rorty has been in the chapter getting some mileage out of comparing the current trend to the history of sociology departments, which according to Rorty "started out as movements for social reform [and] ended up training students to clothe statistics in jargon." In comparison,

If literature departments turn into departments of cultural studies, Bloom fears, they will start off hoping to do some badly needded political work, but will end up training their students to clothe resentment in jargon. (p. 127)


The second comparison that guides Rorty is the state of academic philosophy in the 1930s, in which he saw two paradigmatic figures. On the one hand, there was A.N. Whitehead, who "stood for charisma, genius, romance, and Wordsworth. Like Bloom, he agreed with Goethe that the ability to shudder with awe is the best feature of human beings." On the other hand, there was A.J. Ayer, who

stood for logic, debunking, and knowingness. He wanted philosophy to be a matter of scientific teamwork, rather than of imaginative breakthroughs by heroic figures. He saw theology, metaphysics, and literature as devoid of what he called "cognitive significance," and Whitehead as a good logician who had been ruined by poetry. Ayer regarded shudders of awe as neurotic symptoms. He helped create the philosophical tone which Iris Murdoch criticized in her celebrated essay "Against Dryness." (pp. 128-9)


Now, we are far removed from the '50s, in which positivism was arguably at its zenith, and it's been a decade since Rorty's essay. I'm a little more optimistic than he about the possibility for what we might call "inspirational philosophy," bringing his comparison full-circle. Feyerabend's imaginative late work, Conquest of Abundance, was published a year afterwards, and in recent years, the appreciation of imaginative figures like Whitehead, Dewey, Feyerabend, the German Romantics, and others like them seems to be on the rise in academic departments, and there were even when he was writing more imaginative and inspirational figures than Rorty probably appreciated (I would count Paul Churchland as one such). Still, we obviously have a long way to go towards being a humanistic discipline that is in "good shape," if Rorty is right.

What do you think?

Does This Help?

Chaospet raises an interesting problem for compatibilism. (Hat tip: Leiter)