I was reading this review of Timothy Williamson’s new (introductory-level) book recently when I came across this striking remark: “philosophy, Williamson tells us, starts from common sense, that is, 'what most members in a society know' (p. 8)”. This sentiment should be familiar to anyone who does academic philosophy. During conference talks and in books and articles, one often hears the phrase “that seems counterintuitive” as a strike against an argument or theory. Yet although this appears to be a very common view—that philosophy should begin with and ‘answer to commonsense’—it really could not be further from my own conception of what philosophy should do or the methods it should involve.
My concerns about philosophy ‘starting with commonsense’ are partly rooted in history. To put it bluntly, commonsense has a terrible track record, both in the sciences and in philosophy. Begin with science. Here, we learn that Galileo was basically run out of town from the University of Pisa because his mechanistic philosophy contradicted the Aristotelian ‘commonsense’ of the time. (Cropper, pp. 5-6) Then of course there was Darwin, whose theory of evolution by natural selection was assailed by numerous critics as an assault on the ‘commonsensical’ idea that humans are unique, divine creations. (Clark, pp. 135-41) Then there was Einstein, whose theory of relativity was mocked by a number of eminent scientists—most famously Philip Lenard—for flouting the “simple, sound common sense” that space and time must be absolute. (Hillman et al., pp. 37, 55, 57) As physicist Sir Oliver Lodge once put it, relativity is just "repugnant to commonsense." (Brian, p. 102) Suffice it to say, all of these affairs (and many others) turned out to be a pretty bad look for commonsense. Throughout the history of science, commonsense has a pretty awful track record.
What about philosophy? Here, ‘commonsense’ hardly fares better. For example, in 17th Century England, Sir Robert Filmer enjoyed widespread fame for defending the ‘commonsensical’ idea that God endowed kings with a divine right to rule. However, this ‘commonsense’ did not stand the test of time. Instead, it was John Locke’s heretical idea that all people have natural rights—contrary to the classist and religious prejudices of the time—that served to influence future political and philosophical thought. Similarly, if we go back much further, to ancient Greece, we find that Aristotle took it to be simple commonsense that some people are fit to be slaves; Pythagoras thought it simple commonsensical that one should not eat beans, look in a mirror beside a lamp, or worship without shoes on. (Baird, p. 16) And so on. What we find here, again—throughout philosophical history, as in scientific history—is that what one generation takes to be commonsense the next takes to be foolish prejudices.
This is illustrated perhaps nowhere better than in the neo-Platonist Thomas Taylor’s satirical response to Mary Wollstonecraft’s A Vindication of the Rights of Woman entitled, “A Vindication of the Rights of Brutes”—where Taylor satirically argues, ‘if women have rights, why not animals too?”. Yes, in Taylor's satire, we get the following gem, where Taylor openly mocks the idea of moral equality:
IT APPEARS AT FIRST SIGHT SOMEWHAT SINGULAR, that a moral truth of the highest importance, and most illustrious evidence, should have been utterly unknown to the ancients, and not yet fully perceived, and universally acknowledged, even in such an enlightened age as the present. The truth I allude to is, the equality of all things, with respect to their intrinsic and real dignity and worth.... (p. 5)
And thus much may suffice, for an historical proof, that brutes are equal to men. It only now remains (and this must be the province of some able hand) to demonstrate the same great truth in a similar manner, of vegetable, minerals, and even the most apparently contemptible clod of earth; that thus this sublime theory being copiously and accurately discussed, and its truth established by an indisputable series of facts, government may be entirely subverted, subordination abolished, and all things everywhere, and in every respect, be common to all. (p. 28)
Of course, Taylor and his followers thought that extending rights to animals was so obviously antithetical to commonsense that it sufficed to demonstrate the absurdity of extending equal rights to women--not to mention the basic principle most of us now take to be obvious: that everyone is entitled to equal moral concern.
More broadly, if we look at philosophical history, it’s simply not ‘commonsense’ theories that have survived the test of time. In their time, Thomas Reid and William Whewell—commonsense moral intuitionists—were considered leading moral philosophers. However, moral philosophers today hardly study or engage with them. Why? Because, as John Stuart Mill put it, in his time 'commonsense' was used to defend the divine right of monarchs, the superior status of aristocracy, and the power of the church. (Reeves, p. 164) Mill found this repugnant, arguing that, “the regeneration required, of man and society…can never be effected under the influence of a philosophy which makes opinions their own proof, and feelings their own justification.” (Ibid.) For Mill, ‘commonsense’ is little more than “an apparatus for converting…prevailing opinions, on matters of morality, into reasons for themselves” (p. 241).
I am with Mill, Hume, Patricia Churchland, Dan Dennett, and other naturalistically-inclined philosophers. I don’t think philosophy should be in the business of ‘beginning with’ or ‘answering to’ commonsense at all. Commonsense is often (usually, I’d say) mistaken. Our task should be to place philosophy on better evidential foundations than that--specifically, on the findings of natural science, or at least on the kinds of principles of theory-selection that govern scientific practice. I know that not everyone shares my enthusiasm for ‘natural philosophy.’ Still, for all that, I am increasingly inclined to think it’s the best way to ensure that philosophical arguments and speculation are rooted in facts rather than in ill-founded, regressive prejudices of 'commonsense'—the former of which the world, it seems, now needs as much as (if not more than) ever.
In any case, whenever I hear philosophers say things like, "That's counterintuitive", "That's a serious bullet to bite", or "commonsense dictates", my inclination is not to find a way to make philosophy consistent with commonsense, but instead to figure out whether--given the actual facts that can be posited consistent with sound principles of theory-selection--commonsense has any truth to it at all!
Do philosophers typically think philosophy is real? As in: do you honestly believe the philosophical positions you hold, or believe that the field you work in is pursuing real things?
I've been in graduate school for five years, and always struggled with this question. I always assumed people knew philosophy was an intellectual flight of fancy and picked philosophical positions arbitrarily. I also have always assumed that philosophical issues are fantasy. But the people in my program seem to think that the positions they hold are actually right. Am I the outlier? Do other people have similar inclinations?
I think these are really good questions. Before I weigh in and open things up for discussion, here are three response comments that readers submitted:
PhD student: nope, you're not an outlier. Your fellow grad students need to grow up. Some people never do. - by Overseas Tenured
I would not have dedicated over a decade of my life, and many 60+ hr work weeks, to philosophy, if I thought "philosophy was an intellectual flight of fancy" or if I was "pick[ing] philosophical positions arbitrarily". There are, of course, some topics researched in philosophy that I might characterize as "intellectual flights of fancy", but I avoid those and work on what I take to be serious, important issues. I also try to give everyone the benefit of the doubt, and assume there's something in those others topics that is important that I'm missing. As far as I know, all of my friends take either their own work, or at least much of what they teach, reasonably seriously. Some may take it more seriously than others, and I know everyone at some point struggles with feeling like their work is actually worthless, but I don't know anyone who openly takes such an extreme and sweeping view of philosophy --- e.g., seeing their own work as a mere kind of game detached from reality or anything important, and also seeing basically all of philosophy that same way. Here are some questions addressed in philosophy: How do we have a just society? Is a specific policy X just and fair? Do animals feel pain and should we eat them? When is it appropriate to believe something based on the evidence? What makes something "fake news"? These (and variations of them) are all questions studied by philosophers. I would have thought they are all clearly important and asking about objective features of reality. - by Mike
Kieran Setiya's podcast "Five Questions" asks most (or all?) of the people he interviews whether they believe the philosophical positions they hold. So you can check out that podcast for various answers to that question. - by Daniel Weltman
My own position here is somewhere in the middle. On the one hand, I wouldn't do philosophy if I didn't think the questions we address are real, and if I didn't think there is something to the views that I defend. On the other hand, I very much appreciate skeptical concerns about traditional philosophical methods. As Jason Brennan argues in his 2010 article, 'Scepticism about philosophy', "Widespread disagreement shows that pursuing philosophy is not a reliable method of discovering true answers to philosophical questions. More likely than not, pursuing philosophy leads to false belief." I advance similar concerns here about traditional methods in moral philosophy. My own preferred answer to this kind of skeptical challenge is that philosophy should use better methods, drawing on science and the methods of the sciences, vis-a-vis natural philosophy. Which is why I think rising interest in metaphilosophy and experimental philosophy is especially valuable. Finally, as many have noted, I think it is impossible to avoid taking philosophical stances on things--for example, on what morality or justice are. We have to simply do our best, though again I think we should use better methods rather than worse ones.
But these are just my thoughts. What are yours? Do you side with PhD Student and Overseas Tenured in thinking of philosophy as little more than flight of fancy, or do you think philosophy is serious business? And, do you believe the views you defend? If so, how do you grapple with skepticism about philosophy's methods?