I think human will necessitates little leaps of faith all the time — Kenosha Kid
Well, the phrase has two elements: the
leap, and the
faith. Leaping is not like walking, a steady, methodical progress from one place to another. Leaping is taking the distance covered by many steps at once; we cannot make our steps bigger, so to pull off such a feat we must actually leave the reassuring solidity of the ground and take to the air, at least for a moment.
It is a choice sometimes forced upon us. When our walk brings us to a ditch or a small stream, there are three ways forward: there is an imaginary way straight on from this side to the other, as it would be if the ditch were not there; there is a way under, down into the ditch or stream and then up the other bank; and there is a similar way over, through the air, above where we would walk if only we could.
If we generalize this situation, the ways under and over are not always available. We can imagine thinking as traversing an obstacle course. (In everyday life, there is often a timer ticking, but not in philosophy and only for external reasons in science.) An obstacle blocks the methodical progress forward; it may offer a simple way over (a small ditch to be leaped over), a methodical way over (like a climbing wall) or under (you may have to crawl under something), and so on. Some obstacles may offer a choice — slog through the water or swing across on a rope. Some may offer a false choice — attempt to slog through a deep mud hole, which you will not be able to do, or jump over.
This is one way of situating leaping: it is a solution to some obstacles but not others, when it was not our preferred way forward. If, on the other hand, you already preferred leaping, because it is faster, and chain leaps together one after another, we don’t call that ‘leaping’ but ‘running’.
But are we sure it’s leaping-over-an-obstacle we’re interested in? There’s another idiom that seems similar, which is ‘jumping to a conclusion’.
*(Kahneman’s line about System 1.)
If you compare them, it’s clear that we disapprove of jumping to conclusions because it is not a response to an obstacle; you had the option of continuing to make steady, methodical progress but, out of impatience, gave up traveling methodically, selected a destination and simply teleported there.
No one feels any compunction about leaping when it is called for. But when we are thinking, how do we know when our leaps are a solution to a genuine obstacle — the intuitive leaps of a Copernicus or an Einstein — and when we have simply become impatient and jumped to a conclusion?
To know, then, whether we should leap, we need to know whether we face a genuine obstacle. That leaping “works”, that it moves us quickly from one place to another, is not in question, but if we did not have to leap,
where we land might not be where we wanted. But how do we know where we want to land? Because this is in the nature of an obstacle: an obstacle is something you are one side of or the other. You do not need to see the whole course; you do not need to know what destination you are headed for; you only need to know that it is on the other side of each obstacle you face.
And here is at least one place where we might see a role for the second part of the phrase, for
faith. How do you know the destination is on the other side? Perhaps you don’t; perhaps you only have faith that it is. And I think this is just how people tend to use the phrase “leap of faith” (whether it has anything to do with Kierkegaard or not). That it is precisely a leap to an
unknown place. It will be some place, but whether it is is the place we hope for is unknown — as, in the simple case, you might hope each obstacle on the course is the last.
(That some destination worth reaching is on the other side of a series of obstacles, of problems to be solved, has become an article of faith in philosophy. Even Wittgenstein, who makes noises about there being no genuine philosophical problems, implies that he has such a faith in PI 107, the “rough ground” speech.)
But we’re getting ahead of ourselves. To put all this rambling back into context, before abandoning it again, the question is whether there is a genuine obstacle to taking our everyday experience at face value. There is a long history of philosophical objections to such naivety, and a considerable body of recent scientific objection. But related though they may be, there are two different issues here: one about the facts on the ground, that is, about how we get along in the world; and one about how we are to theorize how we get along in the world. If you object that we have no ‘direct access’ to things — whatever that means — that is a claim
of theory, but it is a claim
about how we get along, and implies that there is an obstacle between ‘us’ and ‘the world’. Whether you, or your mind, or your brain, know anything about this obstacle, it’s there to be responded to somehow. On the other hand, if you find the claim that there is such an obstacle compelling, that becomes a different sort of obstacle — how can I take my experience at face value, given everything I know about how, say, perception works? You can then say that the theoretical objection is no obstacle at all, but the end of the line; if you leap over it, you'll leap to nowhere. But at the same time, you can acknowledge that this is not the same obstacle that you (or your mind or your brain) face all the time, and *that* one *must* be leapt over. I take it this is close to your position; maybe there's nothing answering to "perception" or "knowledge" as traditionally understood, but we must behave as if there is to get along in the world, and we'll call that a kind of "pragmatism".
What we need next is a better understanding of what an obstacle is. I wouldn't jump right to "how we recognize something is an obstacle", how we have a certain sort of knowledge, though that's in some sense what we want, so we can say whether there's an obstacle between us and the world that needs to be leapt over. Hopefully we can get to something like that later.