The history surrounding the Tractatus and my personal thoughts In June of 1911 an institution was founded known as the Bridge. It was in part funded using the Nobel prize money of chemist and physicist Wilhelm Ostwald. Its purpose was to organize society under one common – scientific – worldview. It meant to do this by being a central hub for knowledge - A place where one could go and find answers or information regarding any question which science could provide. The bridge was not meant to simply be a giant library of sorts, but rather, it would standardize the information and organize it, with the aim being to provide this information to all other institutions, thereby promoting intellectual unity. By increasing the efficiency of science through standardization and organization, society could more effectively establish a common worldview which took seriously the immense scientific progress from the previous century. The Bridge, however, closed its doors in 1913, never seeing its goal accomplished, but its purpose lived on.
The project drew the attention of a number of its contemporary scientists, including the attention of theoretical physicist Ernst Mach. Mach, like Ostwald was a positivist. They both believed that bringing society under a common scientific worldview, was necessary to bring human reason into the next phase of its development. This required that science be reformulated to only allow within its explanations, facts which were built from experience, and experience alone. Because of this, Mach agreed with Ostwald on another point - that the atomic theory postulated by thinkers such as Helmholtz and Boltzmann, while useful perhaps on paper, was dangerous to the rigor of science. The theory violated what Mach took to be a fundamental tenet of science, that one should never theorize past experience – doing so was not only unnecessary, but dangerous to ‘the economy of thought’.
“One and the same view underlies both my epistemologicophysical writings and my present attempt to deal with the physiology of the senses – the view, namely, that all metaphysical elements are to be eliminated as superfluous and destructive to the economy of science” (AS, IX).
In 1912, a public manifesto was released by Mach; signed by 32 other thinkers, such as Einstein, Freud, Hilbert, Loeb, etc the document essentially called for precisely the vision Ostwald had put forth. Asking all interested scientists and philosophers to help establish a common worldview for society, by drawing upon all knowledge within the special sciences which can be derived from ‘the facts of experience’. Positive facts, as they were called, the positivism which Mach called for, influenced a number of like minded thinkers. Mach’s thinking would continue to influence the intellectuals in Vienna past the first world war. So, when Moritz Schlick, took over the position as chair of philosophy of science (a position previously held by Mach and Boltzmann), in 1922, he began having weekly structured group meetings intending to set the human pursuit of knowledge on proper footing. This group would eventually become known as the Vienna Circle, including members such as Rudolf Carnap, Otto Neurath, and Friedrich Weismann, and in 1929 they would release their own manifesto (written by Carnap, Hans Hahn, and Otto Neurath) citing as their aim the unify science, developing a language where every word refers to something real, not metaphysical – the position known as logical positivism. The group discussed in great detail Wittgenstein’s Tractatus, and saw within it a verification principle of meaning, much like their own work, but Wittgenstein was rarely compelled to join the meetings, and when he did, he would read Tagore’s poetry to them aloud with his back turned.
Ludwig Boltzmann stood opposed to energetisicm of Ostwald, and the anti-metaphysical agenda of Mach. Throughout the late 1800s/early 1900s most physicists were still against the atomic theory, and the influence of Mach on the sciences saw metaphysics as dangerous to the “economy of thought” insofar as it was useless metaphysics.
Boltzmann saw great utility in the use of models in his work, seeing them as inventions of the human mind which prove their value insofar as they prove useful.
“Models in the mathematical, physical and mechanical sciences are of the greatest importance. Long ago philosophy perceived the essence of our process of thought to lie in the fact that we attach to the various real objects around us particular physical attributes – our concepts – and by means of these try to represent the objects to our minds. Such views were formerly regarded by mathematicians and physicists as nothing more than unfertile speculations, but in more recent times they have been brought by J. C. Maxwell, H. v. Helmholtz, E. Mach, H. Hertz and many others into intimate relation with the whole body of mathematical and physical theory. On this view our thoughts stand to things in the same relation as models to the objects they represent. The essence of the process is the attachment of one concept having a definite content to each thing, but without implying complete similarity between thing and thought; for naturally we can know but little of the resemblance of our thoughts to the things to which we attach them. What resemblance there is, lies principally in the nature of the connexion [sic], the correlation being analogous to that which obtains between thought and language, language and writing. (…) Here, of course, the symbolization of the thing is the important point, though, where feasible, the utmost possible correspondence is sought between the two (…) we are simply extending and continuing the principle by means of which we comprehend objects in thought and represent them in language or “ (Boltzmann 1974a, 213).
Boltzmann, like Hertz, Mach, and Helmholtz agreed that the representations we make ought not
be said to share a complete similarity with the objects represented, but disagreeing with Mach,
Boltzmann believed that such metaphysical speculation could be fruitful.
“(…) Hertz makes physicists properly aware of something philosophers had no doubt long since stated, namely that no theory can be objective, actually coinciding with nature, but rather that each theory is only a mental picture of phenomena, related to them as sign is to designatum. (…) From this it follows that it cannot be our task to find an absolutely correct theory but rather a picture that is as simple as possible and that represents phenomena as accurately as possible. One might even conceive of two quite different theories both equally simple and equally congruent with phenomena, which therefore in spite of their difference are equally correct. The assertion that a given theory is the only correct one can only express our subjective conviction that there could not be another equally simple and fitting image” (Boltzmann 1974b, 90-91).
In order to explain, for example, the transference of heat, Boltzmann posited atoms whose motion transferred energy. Boltzmann says that “...the fact that this cannot be demonstrated quite so clearly is due only to the difficulties of computing molecular motion”. The atomistic view of the world, didn’t rely on experiences of atoms, but Boltzmann saw them as furnishing our understanding such that he thought: “...contemporary atomistics gives a fully adequate picture of all mechanical phenomena”; even if they have yet to prove them via experience, he says “...we shall hardly expect to find the phenomena that will not fit into the frame of the picture”, since, “...all essential facts are found in the features of our picture”. Adopting the term ‘bilder’ or ‘pictures’ from physicist Heinrich Hertz, Boltzmann essentially thought the models we make within the mind, are a kind of picture. Mach, however, thought them merely mathematical fictions, only proving useful on paper, but not truly grasping the matter. In fact, in 1910 Mach wrote: “If the belief in the reality of atoms is so essential for you, I forsake the physical way of thinking, I do not want to be a real physicist...I thank you very much for the community of believers. For I prefer the freedom of thought”.
Hertz owed much of his thought to his teacher Helmholtz, who posited a theory meant to explain how we form images of reality. Helmholtz, similar to Mach, believed that objective events in nature are the causes for our sensations – which he called signs -translated via our organs. These signs bear no resemblance to reality, they are, however, “...still signs of something – something existing or something taking place” (FP). Unlike signs, the images we form from them must, “...be similar in some respect to the object of which it is an image” (FP). He thought this a necessity in accounting for our ability to “... discover the lawful regularities in the processes of the external world” (FP). But, in what sense exactly they are to be seen as resembling one another isn’t immediately clear. In an earlier text, Helmholtz had written that: “Our representation of things can be nothing else at all except symbols, naturally given signs for things, that we learn to use for the regulation of our motions and actions...comparison between representation and things not only fails to exist in actuality...but any other kind of comparison is in no way thinkable and has no sense at all (1857).
In the Principles of Mechanics, Hertz says that in trying to predict future events,
“We form for ourselves images or symbols of external objects”...
In order that this requirement may be satisfied, there must be a certain conformity between nature and our thought.” (The Principles of Mechanics, 2)
Hertz believed that experience proves whether this conformity exists, insofar as our images are useful. Unlike Helmholtz, Hertz believed that you can form many different images for the same object, and they might differ in fundamental ways. They must all, however, adhere, Hertz thought, to two principles. These were:
“The form which we give them is such that the necessary consequents of the images in thought are always the images of the necessary consequents in nature of the things pictured.
And
All pictures must conform to logic
In picking between two (or more) images, Hertz said we ought to pick the more ‘appropriate’, that is, the one which pictures more essential relations and which has the fewest superfluous relations (2). But, we cannot avoid “empty relations” altogether Hertz thought, “they enter into the images because they are simply images, - images produced by our mind and necessarily affected by the characteristics of its mode of portrayal” (2). The pictures we form, can display their utility to us, thereby proving their conformity to reality without needing to suppose or supply any further conformity. “For our purposes it is not necessary that they should be I conformity with the things in any other respect” (PM,1). Hertz believed logic fully capable of disallowing inadmissible images into our mind, and paired with the first principle which disallows images which fail to conform to the essential relations of things experienced, our images could be both useful in science and improve in accuracy (3).
“What enters into the images for the sake of correctness is contained in the results of experience, from which the images are built up. What enters into the images, in order that they may be permissible, is given by the nature of our mind” (3).
Hertz ultimately thought:
“To the question whether an image is permissible or not, we can without ambiguity answer yes or no ; and our decision will hold good for all time. And equally without ambiguity we can decide whether an image is correct or not ;. but only according to the state of our present experience, and permitting an appeal to later and riper experience. Bat we cannot decide without ambiguity whether an image is appropriate or not ; as to this differences of opinion may arise. One image may be more suitable for one purpose, another for another ;. only by gradually testing many images can we finally succeed in obtaining the most appropriate.”
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Now, thinks back to Wittgenstein. Recall, that a thought is a logical picture of a fact (3); whether it is true or not requires us to compare it to reality. But, remember, meaningful language can present false facts; elements combined in a way which simply isn’t true.
“An atomic fact is thinkable means: we can imagine it” (3).
This is because, in thought, we can imagine states of affairs which simply turn out false. Wittgenstein combines Hertz’ two principles, stating that a pictures (a thought) is a picture insofar as it has a logical form. That is, every picture is permissible by logic – an illogical picture is not a picture - and its unique logical form is what it has in common with reality such that it can picture it.
Wittgenstein tells us “...everything in logic is permitted”. This is because “...we cannot think illogically” (5.473). It is therefore impossible “...to present in language anything which ‘contradicts logic’” (3.032). If the form of the thought is such that it pictures the essential relations of the thing being pictured, then the thought is true. It is therefore logic which limits the usage of meaningful language. While Wittgenstein indeed thought that the aim of science is a true picture of the world, he didn’t think that there was just one picture of the world.
“Let us imagine a white surface with irregular black spots. We now say: Whatever kind of picture these make I can always get as near as I like to its description, if I cover the surface with a sufficiently fine square network and now say of every square that it is white or black. In this way I shall have brought the description of the surface to a unified form. This form is arbitrary, because I could have applied with equal success a net with a triangular or hexagonal mesh. It can happen that the description would have been simpler with the aid of a triangular mesh; that is to say we might have described the surface more accurately with a triangular, and coarser, than with the finer square mesh, or vice versa, and so on. To the different networks correspond different systems of describing the world” (6.431).
The squares of the fine square mesh, or the triangles or hexagons of the other two, would be the objects with which we form atomic propositions; they merely have a form, and when connected with the other object which otherwise merely gives a colorlessness, we get a black or white shape. This is how science reaches its goal; by bringing experience into a unified whole, through the application of different pictures which are coherent to us, and furnish our understanding. But, Wittgenstein thought these pictures didn’t actually tell us anything about reality.
“(We could construct the network out of figures of different kinds, as out of triangles and hexagons together.) That a picture like that instanced above can be described by a network of a given form asserts nothing about the picture”.
This is why Wittgenstein believes that Newtonian mechanics merely brought “...the description of the universe to a unified form”, not that it literally describes how things exist. “ …the fact that it can be described by Newtonian mechanics asserts nothing about the world; but this asserts something, namely, that it can be described in that particular way in which it is described, as is indeed the case” (6.342). Wittgenstein, like Hertz and Boltzmann, thought that our pictures don’t literally picture the world, they merely furnish our understanding by giving us an intelligible picture that is useful. A picture is intelligible to us if there is a ‘uniformity’ present; that is, all elements are balanced and make sense relative to one another.
“In the terminology of Hertz we might say: Only uniform connexions are thinkable” (6.361).
We can only posit additional elements when there is an ‘asymmetry’ present in the picture.
"When, for example, we say that neither of two events (which mutually exclude one another) can occur, because there is no cause why the one should occur rather than the other, it is really a matter of our being unable to describe one of the two events unless there is some sort of asymmetry. And if there is such an asymmetry, we can regard this as the cause of the occurrence of the one and of the non-occurrence of the other"
Laws are not out in the world, and our utilization of the concept of law is only one mesh we can apply to the world. That the objects and laws which govern them are accurately pictured in science is an illusion according to Wittgenstein (6.371). Whatever mesh we apply to reality, we must not forget that we could equally and rightly apply another mesh as well. There is no riddle between the idealist and realist conception of the world, each are merely one mesh which essentially states “...Whatever building thou wouldst erect, thou shalt construct it in some manner with these bricks and these alone” (6.341). Helmholtz reached a similar position at the end of The Facts of Perceptions wherein he wrote:
“It is always well to keep this in mind in order not to infer from the facts more than can rightly be inferred from them. The various idealistic and realistic interpretations are metaphysical hypotheses which, as long as they are recognized as such, are scientifically completely justified. They may become dangerous, however, if they are presented as dogmas or as alleged necessities of thought. Science must consider thoroughly all admissible hypotheses in order to obtain a complete picture of all possible modes of explanation. Furthermore, hypotheses are necessary to someone doing research, for one cannot always wait until a reliable scientific conclusion has been reached; one must sometimes make judgments according to either probability or aesthetic or moral feelings. Metaphysical hypotheses are not to be objected to here either. A thinker is unworthy of science, however, if he forgets the hypothetical origin of his assertions. The arrogance and vehemence with which such hidden hypotheses are sometimes defended are usually the result of a lack of confidence which their advocates feel in the hidden depths of their minds about the qualifications of their claims.“ (The facts of Perception, 1878)
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More to come