End of (Philosophical) Innocence

Philosophy is built upon intuitions. (Maybe all knowledge is, at root.) Arguments must start somewhere, with something that seems obvious, with something we're willing to take for granted. In the 20th century, philosophers became methodologically explicit about this. Ethicists explicitly appeal to the intuition that it's not right to secretly kill and dissect one healthy person in order to save five needing organ transplants. Metaphysicians appeal to the intuition that if your molecules were scanned and taken apart and that information used to create a person elsewhere who was molecule-for-molecule identical to you, that person would be you. Philosophical debate often consists of noting the apparent clash between one set of intuitions and a theory grounded in a different set of intuitions. For example, if you won't dissect the one to save the five, does that imply that if a runaway trolley is heading toward five immobilized people, you shouldn't divert it to a side-track containing only one? There are ways to say no to the one and yes to the other, of course, but only by means of principles that conflict with still other intuitions... and we're off into the sort of save-the-intuitions game that analytic philosophers (and I too) enjoy!

Until recently, such intuition-saving disputes have been conducted without any careful empirical reflection on the source and trustworthiness of those intuitions. We have the sense that it would be wrong to dissect the one or that the recreated individual would be you, but where does that intuition come from? Do such intuitions somehow track a set of facts, independent of the individual philosopher's mind, about what is really right, or about what personal identity really consists in? A story needs to be told.

That story will necessarily be an empirical story, a story about the psychology of intuition -- and maybe, too, the sociology and anthropology and history and linguistics of intuition. For example, suppose it turns out that only highly educated English speakers share some particular intuition that is widely cited in analytic philosophy. That should cast some doubt -- doubt that can perhaps be overcome with a further story -- about the merit of that intuition. Or suppose that a certain intuition was to be found only among people for whom having that intuition would excuse them from serious moral culpability for actions performed earlier in their lives. That should should cast defeasible doubt on the intuition.

With the maturing of empirical sciences that can cast light on the sources of our intuitions, we philosophers can no longer justifiably ignore such genetic considerations in evaluating our arguments. We can no longer innocently take our intuitions about philosophical cases as simply given. We must recognize that psychology, sociology, anthropology, history, and linguistics can cast important light on the merits and especially demerits of particular philosophical arguments.

Of course most philosophers know virtually nothing about psychology, sociology, anthropology, history, and linguistics; and most psychologists, sociologists, anthropologists, historians, and linguists are insufficiently enmeshed in philosophical debates to bring their resources to bear. A huge cross-disciplinary terrain remains almost unspoiled. To me, nothing could be more exciting! (Well, nothing in academia.)

A few have made starts: Paul Bloom, Tony Jack, and Philip Robbins have been discussing the roots of the intuition that mind and body are distinct. Fiery Cushman, Marc Hauser, Joshua Greene, and John Mikhail have been discussing the psychological roots of the moral intuitions in runaway trolley type cases. Reading "intuition" widely to include any views that people find attractive without compelling argument, Shaun Nichols has explored the roots of the intuition that there is no incompatibility between free will and causal determinism. I have examined the culturally-local metaphors behind the sense philosophical phenomenologists and others have that coins look elliptical when seen from an angle. These are barely beginnings.