I began my academic philosophy career as a ‘logician.’ I wrote a dissertation on belief revision, and was advised by a brilliant logician, Rohit Parikh, someone equally comfortable in the departments of computer science, philosophy and mathematics. Belief revision (or ‘theory change’ if you prefer) is a topic of interest to mathematicians, logicians, and computer scientists. Because of the last-named demographic, I was able to apply for, and be awarded, a post-doctoral fellowship with a logics for artificial intelligence group in Sydney, Australia. (In my two years on the philosophy job market, I sent out one hundred and fourteen applications, and scored precisely zero interviews. My visits to the APA General Meeting in 1999 and 2001 were among the most dispiriting experiences of my life; I have never attended that forum again. The scars run too deep.)
During my post-doctoral fellowship, I continued to write on belief revision but I also co-authored papers on belief merging (which has the same formal structure as social choice theory), non-monotonic logic, and dynamic logic (in the area known as ‘reasoning about actions.’) Some papers went into the Journal of Philosophical Logic and related journals; yet others went into the refereed proceedings of the most important artificial intelligence conferences. Because of my publication record and because of my stellar job hunt numbers in the philosophy job market, I decided to apply for a computer science job at Brooklyn College. I interviewed, and got the job; I was assured I could teach in the philosophy department as well. (So, in philosophy, my numbers were 0-114; in computer science 1-1.)
A few years later, around 2005 or so, I stopped working in logic. I declined invitations to conferences, I dropped out of co-authored projects; I put away, on the back-burner, many unfinished projects. (Some of them still strike me as very interesting, and if a promising graduate student would ever want to work on them, I would consider advising him/her.) This was not a very smart move professionally; I had finally, after five years of work, acquired a cohort of like-minded researchers (and friends); I had become a member of academic and professional networks; some of my work had become known to people in the field; I had managed to secure funding for release time, conference visits, and academic visitors; my work was generating problems, like the ones mentioned above, which could be worked on by graduate students; and so on. This was especially not a clever move given my impending tenure and promotion review in 2007; I would have to begin anew in a new field and make headway there.
But I just couldn’t work as a logician any more. I wasn’t an incompetent logician but I wasn’t as good a logician as the folks I regularly interacted with in the course of my work. Working in logic didn’t come easily to me; I had to work harder than most to get anything done in it. I had also realized that while I enjoyed puzzling out the philosophical and conceptual implications of the various models for belief change, belief merging, and reasoning about actions that I worked on, I did not so much enjoy working on producing rigorous proofs of the various propositions these models entailed. I did not feel, as it were, a ‘flow‘ in my work. (I continued to enjoy teaching related material; I taught discrete mathematics, artificial intelligence, and the theory of computation for the computer science department, and loved every minute of it. Well, I exaggerate, but you catch my drift.)
So I turned my mind to something else. I have no regrets about my decision. And I have no regrets about having spent six years working in the areas I did work in prior to my ‘departure.’ I learned a great deal of logic; I grew to appreciate the work of mathematicians and logicians and theoretical computer scientists; straddling disciplines was a deeply edifying experience; I am happy I did not spend all my time talking to philosophers. But I couldn’t stay there.
I continued to teach in both departments, and then finally, in 2010, I transferred from the computer science department to the philosophy department. I was finally ‘home.’
I wonder if readers of this blog have changed their career paths for reasons similar or dissimilar to mine. Perhaps you found yourself no longer engaged by the central problems in your area of interest; or perhaps something else altogether. I am curious, and interested.