In this article I will re-assess Immanuel Kant by means of encyclopedia articles written about him. I will be drawing from two sources here, one the Internet Encyclopedia of philosophy hosted by the University of Tennessee, and two, the Stanford Encyclopedia of Philosophy. Below the former will be called "utm.edu" and the latter "stanford.edu". utm.edu should carry additional weight of authority, since all of its articles are peer-reviewed.
Immanuel Kant (1724 – 1804), produced a body of work that is itself encyclopedic in size. He wrote on nearly every academic subject that existed at the time, from religion, to pure ethics, to metaphysics, logic, and even articles on dynamics and mechanics in physics. The volumnous size of his work makes it appropriate to discuss Kant even from second-hand sources, as I will do here.
In this article I will be concentrating only on Kant's ontology; in particular, the thorny question of the existence of an objective world persisting independently of observers, and independently of observers' minds. I will be defending three assertions in this regard.
- ) Immanuel Kant was actually responding to the solipsism of George Berkeley, and in the negative. Kant was defending the existence of an objective world and defending the persistent existence of objects outside of us.
- ) Kant's distinction between a Noumenon and Phenomenon turned out to be correct. More than correct, this distinction was the very key ingredient for unleashing all of science in its modern form.
- ) Quantum mystics of the Deepak Chopra variety, and New Age writers of various stripes should not utilize Immanuel Kant as a person who lends authority to their claim that we "create our own reality". Whether quantum mysticism is true or not is not investigated here. Instead, mystics and woo-woo peddlers should discontinue quoting Kant, since Kant's entire body of work was actually reinforcing the opposite view.
In the 21st century, (particularly the developed world) appears quite alien to this. We are awash in powerful technologies which could not be conceived of at the end of the 18th century. A list is worth mentioning. A schoolgirl can take a wafer of plastic from her pocket, press a few buttons, and be talking to a parent who is 80 miles away, all without connecting the plastic rectangle to any wires. We call these devices "mobile phones". We travel over land in metal and glass carriages that move over giant strips of concrete, at speeds near 70 miles per hour. We call these devices "cars". Humans in the 21st century can fly through the air faster than eagles, ( indeed we have jets that travel 3 times the speed of sound.) Our submarines can fire missiles that travel 8000 miles, guided by computers inside of satellites. This missile can be launched while the submarine is still underwater. We have created bombs which can flatten cities, and we flattened two cities in Japan, in actuality. We had astronauts hopping around on the moon. We have dissected the human body down to its constituent molecules. Not only do we understand how these molecules fit together, we have sequenced the human genome. We have telescopes that can see so far into space that they can see back into time itself. We believe we may even be seeing the beginning of time.
The list serves the purpose of example cases demonstrating that humans have measured and understood the objective world, and applied that knowledge to create powerful technologies. The noumenon is distinct from our phenomenal experience, as Kant correctly noted. That is to say, although we do not experience the noumenon directly, we can use the tools of reason, statistics, and logic to deduce its properties by proxy. Since Kant lived in agrarian Prussia, he was hesitant to declare that we could understand the noumenon through reason. Nevertheless, his position was a significant advancement over Berkeley, who claimed that an objective world was not even "possible"!
If Kant were alive, he could simply point around himself (at indoor lighting, vaccines, electricity, commercial airlines) and declare that the noumenon has an independent existence, and humans have reasoned about it. Electricity and FM radio work as Maxwell's equations said they would, showing that human reasoning was, at the least, partially correct. This even while these magnetic fields are totally invisible to our eyes.
We will start with Stanford showing the landmark distinction between noumena and phenomenal experience.
This author has never seen, smelled, nor tasted a Higgs boson. (I would presume the readers of this article have not done so either.). Certainly then, we would not say that we have unmediated intellectual access to Higgs bosons. In other words, Higgs bosons are not part of my phenomenal experience. The same can be said of electrons. So either the lighting in the room is done by "lightbulb faeries", or we can postulate electrons racing in the metal of the wires. Though no human being has ever seen an electron, their existence can be reasoned out from their effects. Transcendental realism (to which Kant was opposing) would force us to commit to the conclusion that since electrons are not part of phenomenal experience, that they also do not exist.stanford.edu wrote:Throughout the Analytic Kant elaborates on this general view, noting that the transcendental employment of the understanding, which aims towards knowledge of things independently of experience (and thus knowledge of “noumena”), is illicit (cf. A246/B303). It is in this connection that Kant states, famously, in the Analytic, that “…the proud name of ontology, which presumes to offer synthetic a priori cognitions of things in general… must give way to the more modest title of a transcendental analytic” (cf. A247/B304). Filling this out, Kant suggests that to take ourselves to have unmediated intellectual access to objects (to have “non-sensible” knowledge) correlates with the assumption that there are non-sensible objects that we can know. To assume this, however, is to conflate “phenomena” (or appearances) with “noumena” (or things in themselves). The failure to draw the distinction between appearances and things in themselves is the hallmark of all those pernicious systems of thought that stand under the title of “transcendental realism.” Kant's transcendental idealism is the remedy for these.____ {1}
Many applications of methods of reasoning must be utilized in order to arrive at knowledge of Higgs bosons. Deductive, inductive, inferential, and statistical methods must be employed to state, with any credibility, that a Higgs boson exists and has certain properties. Like forces in magnetic fields, and energy, the Higgs boson is an aspect of the noumenon (that "objective world"), which is arrived at through circuitous paths in our reasoning.
Another striking example. The bacteria which caused a plague in 13th century Europe. Such bacteria was not seen, tasted, felt, or heard by those whom it was killing. Phenomenal experience must be distinct from a noumenon. Because we citizens of the 21st century are post-Kant, we can state this with impunity, and to us it seems evident. Kant , however was forced at the time of his life, to defend this position through the methods of pure reason.
This paragraph (from utm) re-iterates what was said above. Kant was responding to Berkeley's solipsism. And this describes exactly how Kant framed the argument. All minds with rational faculties must share some common foundational attributes (Kant likes the word "categories"). It is through this commonality of reason that a consistent outside world is found to exist and be persistent.utm.edu wrote:It should be pointed out, however, that Kant is not endorsing an idealism about objects like Berkeley’s. That is, Kant does not believe that material objects are unknowable or impossible. While Kant is a transcendental idealist–he believes the nature of objects as they are in themselves is unknowable to us–knowledge of appearances is nevertheless possible. As noted above, in The Refutation of Material Idealism, Kant argues that the ordinary self-consciousness that Berkeley and Descartes would grant implies “the existence of objects in space outside me.” (B 275) Consciousness of myself would not be possible if I were not able to make determinant judgments about objects that exist outside of me and have states that are independent of my inner experience. Another way to put the point is to say that the fact that the mind of the knower makes the a priori contribution does not mean that space and time or the categories are mere figments of the imagination. Kant is an empirical realist about the world we experience; we can know objects as they appear to us. He gives a robust defense of science and the study of the natural world from his argument about the mind’s role in making nature. All discursive, rational beings must conceive of the physical world as spatially and temporally unified, he argues. And the table of categories is derived from the most basic, universal forms of logical inference, Kant believes. Therefore, it must be shared by all rational beings. So those beings also share judgments of an intersubjective, unified, public realm of empirical objects. Hence, objective knowledge of the scientific or natural world is possible. Indeed, Kant believes that the examples of Newton and Galileo show it is actual. So Berkeley’s claims that we do not know objects outside of us and that such knowledge is impossible are both mistaken. ____ {2}
The utm writer uses the word "intersubjective" to describe this state of affairs. I would suggest a better word here is trans-subjective. It is not the case that we are all schizophrenics whose subjective minds are an unstructured cluster of willy-nilly thoughts (David Hume claimed this). At the least, most of us have minds structured by capacities for reason. "Interplay" between those commonalities is not as accurate as saying "translation" between them.
Here we see Kant utilizing reasoning that is suspiciously "ultra-modern" in scope. Kant is already thinking about methods of verifying theories of the material world through mathematics. This is precisely what is done in the 21st century when computers are used to simulate various physical systems. Scientists then rely on the results of those simulations as being very close to the real thing. (It should be noted that what a computer simulation is doing, at the fundamental level, is numerically solving various equations. Usually these are partial differential equations derived from formulas taken from scientific theories.) We see this done by meteorologists on the news, who refer to several different weather prediction models, whenever a major storm is threatening. Kant goes on to say that forces cannot be comprehended. (This was somewhat premature). Nevertheless, Kant's thinking is demonstrably 200 years ahead of its time.stanford.edu wrote:In the General Remark to Dynamics Kant addresses two main issues. First, Kant considers how it is that the specific varieties of matter (e.g., water as different from mercury) might be reduced, at least in principle, to the fundamental forces of attraction and repulsion. The second issue concerns the fundamental distinction between the “mathematical-mechanical” and the “metaphysical-dynamical mode of explanation”. The former mode of explanation, which is associated with the postulation of atoms and the void, employs nothing more than the shapes and motions of fundamental particles and empty interstices interspersed among them. It contrasts with the metaphysical-dynamical mode, which employs fundamental moving forces (e.g., attraction and repulsion) in its explanations. Kant grants that the mathematical-mechanical mode has an advantage over the metaphysical-dynamical mode, since its fundamental posits can be represented (indeed, “verified” (4:525)) mathematically, whereas he repeatedly admits that the possibility of fundamental forces can never be comprehended, i.e., their possibility can never be rendered certain. However, Kant thinks that this advantage is outweighed by two disadvantages. First, by presupposing absolute impenetrability, the mathematical-mechanical mode of explanation accepts an “empty concept” at its foundation. Second, by giving up all forces that would be inherent in matter, such a mode of explanation provides the imagination with more freedom “than is truly consistent with the caution of philosophy” (4:525). ____ {3}
So in this context, Kant is speaking of mathematics as a tool of verification of scientific theories; theories which presuppose that matter is particles moving in a void. At no time, do we see Kant harping on the "unreliability", or "non-truth", or "speculative" aspects, of this methodology. Kant is silent on scientific theories being "tentative guesses" to be overturned by new evidence. There is nothing here which is analogous to the anti-scientific posture seen in many amateur philosophy forums.
That matter has no internal determinations (thinking, desiring, feeling) is a modern conception of matter. To highlight the philosophy of matter embodying "only external relations in space", it is fitting to surround it with several philosophies who are contrary to it. For short lets refer to this as mechanical conception.stanford.edu wrote:Kant's Second Law of Mechanics, stated in Proposition 3, is that every change in matter has an external cause. (Immediately after this principle, Kant adds in parentheses a version of the law of inertia that is much closer to Newton's: “every body persists in its state of rest or motion, in the same direction, and with the same speed, it is not compelled by an external cause to leave this state” (4:543). Since Kant's Second Law of Mechanics is not identical to Newton's law of inertia, it would require argument to show that, and by means of what additional assumptions, the former entails the latter.) The proof of the main principle depends on the Second Analogy of Experience (which asserts that all changes occur in accordance with the law of cause and effect and thus entails that every change in matter has a cause) as well as on the further assumption that matter has no internal grounds of determinations (such as thinking and desiring), but rather only external relations in space. In his remark to this proposition, which clarifies this “law of inertia,” Kant explains that inertia is to be contrasted with life or the ability of a substance to determine itself to act from an internal principle. Thus, a body's inertia “does not mean a positive striving to conserve its state” (4:544), but rather what it does not do, its lifelessness. ____ {3}
Hegel (1770 – 1831), proposed that the cosmos contains both a material and a mental aspect. The material aspect would be correspond to the mechanical conception above. Hegel asserted this only describes one side of affairs in his book, 'Phenomenologie des Geistes.'
David Chalmers ( 1966- ) has recently uncovered an ambiguity that he calls the Hard Problem of Consciousness. He advocates a solution to this problem, which many now call a Dual-Aspect theory. So while matter contains an external spatial relations of force, it must also contains an internalized experiential aspect.
Hylozoism. A philosophy with origins tracing back to at least Greek antiquity. The philosophy involves collapsing distinctions between living and non-living material.
Kant then goes on to segregate off the phenomena of life, from matter. He asserts that matter is subject to the law of inertia, while living organisms are not. While this is somewhat premature in a scientific context, the distinction that there is a "life-less" material world separate from living organisms is present in Kant's writing. That is, here is Kant (again) talking about material outside of life -- and that material having predictable, rational laws by which it abides. In this isolated case, it is the law of inertia.
Kant's Role in the history of science
Kant died in 1804. The 19th century would experience the rise of technological science ("applied science" we might call it) to a rapid pace not seen at any other time in history. By the end of the century, bacteria had been discovered, land was covered in railways, the steam engine was ubiquitous, artificial lighting existed, metallurgy gave rise to submarines, ships and other modern military weapons (e.g. rifling, dynamite). Darwin had published his landmark thesis, electricity was united with magnetism, and the seeds of Special Relativity were in place (e.g. the modern concept of "energy").
Kant's realization of a noumenal aspect of the world , which cannot be perceived directly, opened up the pandora's box of technological innovation. Instead of the noumenon being received as a persistent, perplexing mystery, the scientific world instead approached it as a challenge. Scientists agreed to its existence, but wanted to see how far logic, statistics, and inference could be stretched to try to uncover its properties. As it turned out, science rose to the challenge, and the results were catastrophic.
This author realizes that it is no longer en vogue to refer to Truth in philosophical writing. By the 1920s, work in physics was going to give rise to something referred to now as Quantum Mechanics. At least as a temporary exercise, we might revisit Truth (with a capital T), in the old antiquated Greek sense of the word. Imagine that philosophers can seek out Truth, and maybe even find it some day. Imagine that Quantum Mechanics is actually the right theory of matter, and that all previous conceptions were incorrect. That is, Quantum Mechanics is "True" in the Greek sense. If we entertain this, at least for the sake of discussion, then Kant is re-invigorated twice over. The original quandaries of the noumenal world re-surface in a new and unexpected way. But this is a topic for another article.
REFERENCES ____________________________
{1} http://plato.stanford.edu/entries/kant-metaphysics/
{2} http://www.iep.utm.edu/kantmeta/
{3} http://plato.stanford.edu/entries/kant-science/