[Used to have a more boring title still preserved in the URL. -Ed.] In general I’m deeply optimistic about the potential for dialogue between the humanities and quantitative disciplines. I think there’s a lot we can learn from each other, and I don’t think the humanities need any firewall to preserve their humanistic character.
But there is one place where I’m coming to agree with people who say that quantitative methods can make us dumber. To put it simply: numbers tend to distract the eye. If you quantify part of your argument, critics (including your own internal critic) will tend to focus on problems in the numbers, and ignore the deeper problems located elsewhere.
I’ve discovered this in my own practice. For instance, when I blogged about genre in large digital collections. I got a lot of useful feedback on those blog posts; it was probably the most productive conversation I’ve ever had as a scholar. But most of the feedback focused on potential problems in the quantitative dimension of my argument. E.g., how representative was this collection as a sample of print culture? Or, what smoothing strategies should I be using to plot results? My own critical energies were focused on similar questions.
Those questions were useful, and improved the project greatly, but in most cases they didn’t rock its foundations. And with a year’s perspective, I’ve come to recognize that there were after all foundation-rocking questions to be posed. For instance, in early versions of this project, I hadn’t really ironed out the boundary between “poetry” and “drama.” Those categories overlap, after all! This wasn’t creating quantitative problems (Jordan Sellers and I were handling cases consistently), but it was creating conceptual ones: the line “poetry” below should probably be labeled “nondramatic verse.”The biggest problem was even less quantitative, and more fundamental: I needed to think harder about the concept of genre itself. As I model different kinds of genre, and read about similar (traditional and digital) projects by other scholars, I increasingly suspect the elephant in the room is that the word may not actually hold together. Genre may be a box we’ve inherited for a whole lot of basically different things. A bibliography is a genre; so is the novel; so is science fiction; so is the Kailyard school; so is acid house. But formally, socially, and chronologically, those are entities of very different kinds.
Skepticism about foundational concepts has been one of the great strengths of the humanities. The fact that we have a word for something (say genre or the individual) doesn’t necessarily imply that any corresponding entity exists in reality. Humanists call this mistake “reification,” and we should hold onto our skepticism about it. If I hand you a twenty-page argument using Google ngrams to prove that the individual has been losing ground to society over the last hundred years, your response should not be “yeah, but how representative is Google Books, and how good is their OCR?” (Those problems are relatively easy to solve.) Your response should be, “Uh … how do you distinguish ‘the individual’ from ‘society’ again?”
As I said, humanists have been good at catching reification; it’s a strength we should celebrate. But I don’t see this habit of skepticism as an endangered humanistic specialty that needs to be protected by a firewall. On the contrary, we should be exporting our skepticism! This habit of questioning foundational concepts can be just as useful in the sciences and social sciences, where quantitative methods similarly distract researchers from more fundamental problems. [I don’t mean to suggest that it’s never occurred to scientists to resist this distraction: as Matt Wilkens points out in the comments, they’re often good at it. -Ed.]
In psychology, for instance, emphasis on clearing a threshold of statistical significance (defined as a p-value) frequently distracts researchers from more fundamental questions of experimental design (like, are we attempting to measure an entity that actually exists?) Andrew Gelman persuasively suggests that this is not just a problem caused by quantification but can be more broadly conceived as a “dangerous lure of certainty.” In any field, it can be tempting to focus narrowly on the degree of certainty associated with a hypothesis. But it’s often more important to ask whether the underlying question is interesting and meaningfully framed.
On the other hand, this doesn’t mean that humanists need to postpone quantitative research until we know how to define long-debated concepts. I’m now pretty skeptical about the coherence of this word genre, for instance, but it’s a skepticism I reached precisely by attempting to iron out details in a quantitative model. Questions about accuracy can prompt deeper conceptual questions, which reframe questions of accuracy, in a virtuous cycle. The important thing, I think, is not to let yourself stall out on the “accuracy” part of the cycle: it offers a tempting illusion of perfectibility, but that’s not actually our goal.
Postscript: Scott Weingart conveys the point I’m trying to make in a nicely compressed way by saying that it flips the conventional worry that the mere act of quantification will produce unearned trust. In academia, the problem is more often inverse: we’re so strongly motivated to criticize numbers that we forget to be skeptical about everything else.