I think of philosophy as more like trying to fix the software that your brain runs on. Which includes, for example, how you categorize the outside world, and also your own model of yourself. That sounds like it ought to be the stamping ground of cognitive science, but we actually have a nice, high-level access to this kind of thing that doesn't involve thinking about neurons at all: language. So we can work at that level, instead (or as well).

A lot of the stuff in the Sequences, for example, falls under this: it's an investigation into what the hell is going on with our mindware, (mostly) done at the high level of language.

(Disclaimer: Philosophers differ a lot about what they think philsophy does/should do. Some of them definitely do think that it can tell you stuff about the world that science can't, or that it can overrule it, or any number of crazy things!)