Tag Archive for 'hume'

Synthetic & Metaphor

Knowing
1: Epistemology 2: Flux Capacity 3: Correspondence 4: Synthetic & Metaphor 5: Postmortem Epistemology

Finally, a return to the series on . Previously, we’ve covered the “basics” of epistemology, as well as the Greek responses to epistemology. Last time, we hit on and the early French and English responses. Now, we turn to the Germans.

A Response to Rationalism

Let’s start by reviewing Descartes by analogy. Let’s say Jim finds a photograph of a building titled “Empire State Building” in his grandmother’s attic. He’s never heard of this building, never saw King Kong, etc. Does the picture provide enough evidence to prove that the building exists? No, because it could have been drawn by a good artist and simply be a product of the artist’s imagination. Even if Jim knows that the artist always paints from his life experiences and is a good painter, he might have enough evidence to convincingly argue that the building exists. This is what Descartes means when he says that God is what presents information to our senses for experience and that God can be trusted.

Now let’s look at ’s conclusions: knowledge cannot rely on any form of correspondence with either some external “reality” or even some internal belief. Truth is nothing but an agreed-upon custom. So, let’s imagine Steve takes Terry to a baseball game, but Terry is totally ignorant of this game called “baseball” and Steve keeps him in the dark. As Terry watches the events unfold during the first inning, he will come to the conclusion that each inning will run in the same predictable fashion (one team hits the ball with the stick and runs around the track of dirt touching the white bags on the ground while the other team tries to touch that guy with the ball he just hit, etc). But, Terry has no sufficient proof that this will continue. This is analogous to Hume’s dilemma (above).
So now, we can bring in . His response is simple: if our mind uses rules to process our experiences and join them together, then we can be certain that the regularities will always occur in “reality.” To return to our analogies, it would be like Jim going to New York City and finding the city archives (without ever seeing the Empire State Building) and finding in the archives the blueprints for a building titled “Empire State Building.” Those blueprints are a set of rules for creating such a building, so as long as Jim knows that they have been used, then he can be sure that there is a building that resembles those blueprints. There is an expectation that if there are a set of rules for the creation of something and that those rules have been enacted at least once, then there should be that particular product. With Terry, let’s imagine now that Steve explains to Terry that they are at a baseball game. Because games have rules, Terry is confident that the remaining innings will occur in roughly the same fashion.

Kant spends the majority of his time in the Critique of Pure Reason developing these ideas and discovering the rules by which the mind processes and unifies experiences into a coherent whole. How so? All humans are roughly equal in abilities when it comes to experience and knowledge–a regularity. Furthermore, humans do agree that green is green, so there must be a common set of experiences that humans do process roughly the same. Let’s label this set of experiences phenomena. By tracing what occurs when the mind experiences something in the phenomenal world of experience, Kant argues that there is a non-physical aspect of humans that does this processing. Let’s label that area noumena. This is where the self (i.e. one’s mind) exists and processes experiences. The pathway that this occurs is through the usage of rules, what Kant labels judgments of perception and judgments of experience. These are first filtered through what Kant calls the pure (read noumenal, not clean) categories of understanding. It is quite likely that other types of beings have different processes, so this isn’t something universal and across the board. These rules and pathways can only apply to things experienced, but there’s one shortcoming: one cannot experience any pure (again, noumenal) thing. These are the things in themselves (Ding-an-sich) and are always experienced through the phenomenal categories first.

After Kant

There were a few differences with those who followed after Kant, namely and . Hegel sought to remove the limit of knowing things in themselves. His arguments were based on what he termed Absolute Knowledge, which is to be seen not as some form of omniscience but rather as an understanding of self-understanding, (introspective) reflection, and understanding that the object of knowledge is also a subject understanding oneself. In this way, Hegel argues that one can actually know and experience things in themselves. Kierkegaard takes a different route and stands against Hegel’s interpretation of Kant while also inserting his own view of faith into it. Kierkegaard argues that all knowledge is grounded in the ethical–that is, knowledge is itself ethical and rooted in ethics and morality. While both of these derivatives of Kant have some ground, they have been largely ignored by subsequent epistemology (and only there).

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Correspondences

Knowing
1: Epistemology 2: Flux Capacity 3: Correspondence 4: Synthetic & Metaphor 5: Postmortem Epistemology

In the last two posts, i outlined first the “broad strokes” of what falls under the realm of epistemology, followed by a look at some Greek responses to knowledge. Now, our focus jumps nearly two millenia to the next “big thing” in the history of : .

In his Meditations on First Philosophy as an attempt to prove concludes two things with regards to knowledge: it must both be foundational and correspond. Knowledge is true if and only if a person’s matches (or corresponds to) the external world. Descartes gets to these conclusions by first being skeptical about everything (so he says). He reasons that if he finds something that he cannot doubt, then he can build up an entire system of knowledge that (ultimately) proces the existence of God. Descartes first reasons that he could be dreaming (sometimes called the Dream Hypothesis), so he concludes that anything perceptible is suspicious. Keeping with his plan, he rejects as a basis for . In his second meditation, Descartes argues that if he is supposing that all perceptions are false, then he must somehow exist (yes, this is where he gives he famous cogito ergo sum). But, he could be deceived. So, he supposes that that some being with powers on par with God has deceived him (this is called the Evil God Scenario by some) on everything (including that which he removed via the Dream Hypothesis). But still, Decartes is still thinking. The next logical step is that he perceives himself and this must be true because he exists. Therefore, whatever he can “clearly and distinctly perceive” must be true (this is his response to the DH). Descartes then proceeds through the 3rd, 4tf, and 5th meditations arguing God’s existence on these two bases. His final conclusion is that God, a perfect being, exists and does not decieve (and thus negates the EGS). Therefore, since God does not deceive and is the source of perceptions (God is the vehicle through which perceptions are made), what is perceived must also exist. Thus, Descartes concludes that what one perceives corresponds to reality and, as such, must be true. One way of seeing this is:
Descartes_diagram

In a relatively short time frame after Descartes, George Berkeley, a Bishop and professor, brought forth his ideas on human knowledge, which showed some of the difficulties with Descartes’s theory. One of Berkeley’s primary arguments against Descartes dealt with correspondence and perceptions. Essentially, one only perceives one’s own sensations. That is, all perceptions a person experiences comes from the person. This leads Berkeley to conclude that an external world (if it exists) cannot be verified. As such, there cannot be any correspondence between an internal concept/perception and an external object. Therefore, Berkeley concludes that for something to be true, it must correspond with an idea within the self. This would look like such:
Berkeley_diagram

Following Berkeley’s motion, Hume took the most extreme position for his day by rejecting even Berkeley’s idea. Where Berkeley was satisfied with knowledge being an internal correspondence, Hume still wanted a better definition. Hume’s main problem was that of cause and effect. He proposed that cause-and-effect was just a custom. No matter how often something came before another (such as lightning before thunder), there was no guarantee that it would be such in the future. Because of this, there isn’t anything available for an internal correspondence because every instance of something must be taken as a new object, instead of a recurrence of an prior object. There cannot be any internal correspondence. As such, Hume saw no other possible criteria for truth other than custom (or tradition).

Since Hume, very few philosophers have accepted the idea of correspondence when it comes to epistemology as a foundational criteria of it. Of course, it should be noted that Plato had already come to this conclusion centuries before (see the second post in this series), so it could be argued that, except for this small period of time, correspondence has never been a criteria for knowledge (let alone true knowledge), even though some philosophers have found ways of incorporating it in remarkable ways.

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