[This post was inspired by an email correspondence with John Doris.--ES]
The sciences play an important role in (at least) two ways of doing philosophy these days: (a) as an ingredient or constraint in so-called 'naturalistic turns;' (b) as an object of study in Philosophy of X (POX) -- with X = any particular science -- or General Philosophy of Science (GPOS). This (a-b) is not to deny the existence of other roles of science in philosophy, including: (c) functioning as the exemplary model of doing philosophy--I tend to refer to this as "Philosophy as Normal Science" (PANS; regular readers know I want us diminish PANS) and (d) being a source of discipline of philosophy (as, say, Williamson wishes). In practice, there are lots of blended positions. I will not define "philosophy" or "science", and I recognize that those of us that work in Europe (and, perhaps, elsewhere) are often taught (and paid/evaluated) to think of ourselves as scientists.
Here I focus on some problems that (a) and (b), especially, share in practice. The source of these is that we philosophers are generally not practicing scientists. (What I am aboout to claim also applies to those that have a PhD in some science, but it may not apply fully to those that also have ongoing research projects within some science.) This means that any science we rely on (in a-d) will be inevitably: (i) dated (science can move very fast as Bertrand Russell emphasized--it is hard enough for the professionals 'to keep up'); (ii) potentially misunderstood (we are -- despite our fabulous reasoning and conceptual skills -- not the experts in the science, after all); (iii) a partial perspective (most sciences are much larger than philosophy and can have a huge division of intellectual labor). Even if one were to ignore the effects of (i-iii) in (a-d) bits of science 'travel' from properly (stabilized) scientific domains/contexts to philosophical contexts; it is, thus, very likely that (iv) science will be partially transformed in translation (one need not be a Quine-ean holist, Kuhnian incommensurabalist to see that any disciplinary appropriation is not prima facie truth or meaning/pragmatics preserving). In practice, i-iv can be blended--and, perhaps, the list ought to be longer. I call the effects of i-iv, "NAPPs." The idea is that NAPPs is internal to naturalism (and not to be confused with excesses such as scientism or positivism).