VI. THE DREAM-WORK (continued)C. The Means of Representation in DreamsBesides the two factors of condensation and displacement in dreams, which we have found to be at work in the transformation of the latent dream-material into the manifest dream-content, we shall, in the course of this investigation, come upon two further conditions which exercise an unquestionable influence over the selection of the material that eventually appears in the dream. But first, even at the risk of seeming to interrupt our progress, I shall take a preliminary glance at the processes by which the interpretation of dreams is accomplished. I do not deny that the best way of explaining them, and of convincing the critic of their reliability, would be to take a single dream as an example, to detail its interpretation, as I did (in Chapter II) in the case of the dream of Irmas injection, but then to assemble the dream-thoughts which I had discovered, and from them to reconstruct the formation of the dream- that is to say, to supplement dream-analysis by dream-synthesis. I have done this with several specimens for my own instruction; but I cannot undertake to do it here, as I am prevented by a number of considerations (relating to the psychic material necessary for such a demonstration) such as any right-thinking person would approve. In the analysis of dreams these considerations present less difficulty, for an analysis may be incomplete and still retain its value, even if it leads only a little way into the structure of the dream. I do not see how a synthesis, to be convincing, could be anything short of complete. I could give a complete synthesis only of the dreams of such persons as are unknown to the reading public. Since, however, neurotic patients are the only persons who furnish me with the means of making such a synthesis, this part of the description of dreams must be postponed until I can carry the psychological explanation of the neuroses far enough to demonstrate their relation to our subject. * This will be done elsewhere. * I have since given the complete analysis and synthesis of two dreams in the Bruchstuck einer Hysterieanalyse, (1905) (Ges. Schriften, Vol. VIII). Fragment of an Analysis of a Case of Hysteria, translated by Strachey, Collected Papers, Vol III, (Hogarth Press, London). O. Ranks analysis, Ein Traum der sich selbst deutet, deserves mention as the most complete interpretation of a comparatively long dream. From my attempts to construct dreams synthetically from their dream-thoughts, I know that the material which is yielded by interpretation varies in value. Part of it consists of the essential dream-thoughts, which would completely replace the dream and would in themselves be a sufficient substitute for it, were there no dream-censorship. To the other part, one is wont to ascribe slight importance, nor does one set any value on the assertion that all these thoughts have participated in the formation of the dream; on the contrary, they may include notions which are associated with experiences that have occurred subsequently to the dream, between the dream and the interpretation. This part comprises not only all the connecting- paths which have led from the manifest to the latent dream- content, but also the intermediate and approximating associations by means of which one has arrived at a knowledge of these connecting-paths during the work of interpretation. At this point we are interested exclusively in the essential dream-thoughts. These commonly reveal themselves as a complex of thoughts and memories of the most intricate possible construction, with all the characteristics of the thought- processes known to us in waking life. Not infrequently they are trains of thought which proceed from more than one centre, but which are not without points of contact; and almost invariably we find, along with a train of thought, its contradictory counterpart, connected with it by the association of contrast. The individual parts of this complicated structure naturally stand in the most manifold logical relations to one another. They constitute foreground and background, digressions, illustrations, conditions, lines of argument and objections. When the whole mass of these dream-thoughts is subjected to the pressure of the dream- work, during which the fragments are turned about, broken up and compacted, somewhat like drifting ice, the question arises: What becomes of the logical ties which had hitherto provided the framework of the structure? What representation do if, because, as though, although, either- or and all the other conjunctions, without which we cannot understand a phrase or a sentence, receive in our dreams? To begin with, we must answer that the dream has at its disposal no means of representing these logical relations between the dream-thoughts. In most cases it disregards all these conjunctions, and undertakes the elaboration only of the material content of the dream-thoughts. I