Understanding is always understanding something in terms of something else — SophistiCat
I like this answer enough that I have given it myself on this forum several times, and even referred to Feynman in doing so.
But I still have some questions.
It's as if we're describing explanation as solving for an unknown in algebra: there is some leveraging of known information, using it, referring to it, describing the unknown in terms of the known, the known determining the unknown, and so on. How far does this analogy generalize?
For instance, how does one bootstrap such a system? If we are born with no information, then we can acquire none. If we are born understanding nothing, then we have nothing "in terms of which" to understand or explain anything. Do we then conclude, as Chomsky urges us to, that there must be something "wired in", as they say? The only explanation anyone will offer for such wiring is Darwin, and it's not obvious that even
is an explanation.
Another issue: to say we understand something new (to us) "in terms of" something old (to us) makes sense, and everyone has had such experiences, but it also gives people the willies: everyone nurses doubts that they are doing justice to the novelty, to the strangeness, of the new, and we are all also familiar with cases where this enveloping of the new by the old is to some degree a sham. Ordinary people worry about this sort of thing with relationships -- that is, projecting past experiences, memories of previous relationships and so on, onto new relationships. That phrase "in terms of" is a little scary, and with good reason. (It's why the arguments about relativism and incommensurability don't go away: it's cold comfort that you wouldn't recognize a genuinely alien perspective as either alien or a perspective, as you choose.)
What about circularity? Is that an option? Might we explain X given framework A, and an element Y of framework A in terms of framework B, eventually -- the longer the chain, the safer -- working our way back around to X? Within each framework, you're fine, but only by artificially defining the boundary of the "framework" so that circularity lies outside it...
Is there no rock bottom? It begins to look like the institution of science is
embedded in an already given, "taken for granted", as you say, system of cognition. This sense of a science being embedded in something else can be disconcerting. One area I know a little about arises in philosophical logic: look at a dozen introductory textbooks and compare how they introduce the "schemas" or "templates" that will make up the bulk of the book; there's no agreed upon way to introduce these things, no agreement on what they are, what their logical status is, and so on. Each author seems to go his own way with this because if you want to use logic for problems expressed in a natural language, you have to cross that divide somehow. (There's something similar in getting mathematics going, teaching kids what sets and numbers are, and so on.) There is no
obvious way to do that, so textbook authors take a variety of approaches with varying amounts of hand-waving. It's hard not to wonder exactly what you're ending up with if this messiness is apparently required around the edges, and particularly required somewhere uncomfortably near the foundations of your science. (And again, mathematics and sets.)
Your reference to vision suggests that some of what's going on here just isn't what we think it is, that we are consciously building systems to try to understand how we are unconsciously managing so well, and so, in that sense at least, it is just ourselves we are always trying to understand. As you note -- much to your credit! -- there is more to cognition than science, and more to us than cognition. There's religion and spirituality,
gestalten and feelings.
And now we come all the way back around, because if cognition, and, in particular, scientific cognition, are embedded in us, then we have to face up to our uncertainty about what is being understood "in terms of" what. To what degree are we alien to ourselves, or at least to ourselves
qua scientists? The newborn of the empiricists is always presented as a small, admittedly inexperienced but astonishingly capable scientist, observing patterns and theorizing about them. Put so baldly, we can't take that image seriously, but I wonder if we don't secretly believe something very close to it. But what if we are not scientists in human clothing? Can we understand our own strangeness if we only have frameworks that will filter out that strangeness?
Eh. Thanks for a lovely response I don't think I've done justice to. I'm just rattling cages again...