This is the heart of so many things that do not have easy answers, especially philosophy. I see the field dismissed frequently as an exercise in the generation of hot air, but there is so much value to be had in the act of the search, even if the destination is unclear, or even unreachable. The process of description is simultaneously a process of understanding, and while the ongoing philosophical dialectic may not find an answer, it has presented so many ways to possibly represent things such that the answer becomes apparent. Or at the very least, such that it is apparent that some given system cannot contain the answer. These systems of logic, of discovery, then become models useful for all kinds of pragmatic thinking, or if nothing else stand as monuments to the limits of our understanding, and possibly to our ability to understand.
Borges says he's not a thinker in the interview. But I dunno, even if his influences are clear, his ability to understand, and then convey these ideas in such a way as to make them self-evident is in some ways the greater act of philosophy than the raw conception of the ideas.
What a phenomenal interview.