This past week in our graduate course on Information Architecture with Professor Bill Wolff, we’ve explored techniques and design philosophies centered on information display. Our discussion was informed by selected readings from Edward Tufte’s Beautiful Evidence, as well as interactive and PDF versions of Fighting to Live as the Towers Died, by the New York Times. A specific area of focus was the concept of ‘mapping,’ within the context of multimodal composition. (As a preface, it is important to make the distinction that, for purposes of discussion, our definition of mapping is not limited to ‘maps’ in the conventional sense of cartographic renderings–although, it could certainly include the use of them.)
According to Tufte, mapped pictures are representational images that combine scales, diagrams, overlays, numbers, words, and images (13).
Multimodal-mapping presents the audience with several different kinds of information, via a single, visual plane–through a process of layering. Each ‘layer’ serves to signify a different kind of knowledge. For writers, mapping affords a visual dissemination of interconnected webs of knowledge and causal relationships. In terms of information architecture and as a form of composition, multimodal-mapping frames and contextualizes specific intersections within a greater body of knowledge.
If we reflect on the discipline of communication, as writers, at the heart of our craft is effective communication with our audience. What this means in terms of execution–is that in our ‘writing,’ the intended message should come across in a way that is consistent with precisely what we mean to say. In other words, it is paramount that our composition–and therefore our message–not transmit in a convoluted or disjointed way.
So, you may ask, how does multimodality come into play, and why is ‘mapping’–or incorporating other elements besides plain text–important?
As our author asserts, at times, it is necessary to include multiple sources and levels of data (78) in order to illustrate connections and relationships, as well as make different kinds of comparisons; the use of additional kinds of information assist to better explain what we mean to say. For example, the strategic arrangement of annotative and typographic elements–lines and arrows–as well as colors, images, and text, all function together to transmit a message that is dynamic, visually engaging and robust. Important to note, is that these elements also function to provide context and directional navigation to the page–therefore, enabling the reader to clearly ‘decode,’ or ‘read’ the message.
Another facet of multimodal-mapping is that it offers the capability to take extremely complex, high-density information–such as that of cartography, brain research, molecular biology, physics and other high-resolution fields–and re-present it in a way that the linear data becomes embodied into a single, compact, visual representation. Tufte refers to this type of visual information as sparklines or data-words (58). This definition lends itself to that of semiotic metaphor. Another way to imagine sparklines or data-words, is to think of a ‘constellation of information’–or individual, interconnected pieces of knowledge that come together, making up a whole. An example of a sparkline is the double helix of DNA encoding (13) or Tufte’s representation of all 65 of Galileo’s published observations of Jupiter and its satellites. (Pertaining to Tufte’s re-design of Galileo’s work, we note that when the original, ‘intervening’ text was omitted, a new architecture of information presented itself, resulting in the visual evidence becoming adjacent, sequential, linked, moving (108)–a continuity became present that was not there before.)
To further extrapolate on this concept, imagine an illustration of an adult, human skeleton. Now, in order for the message to be clearly understood, specificity is essential–what is needed is clear direction, scope, and scale. With a nod to the author, presenting ‘everything’ results in contextualizing nothing (31)–it conveys a message that is abstruse. So, we don’t want to focus on the ‘whole skeleton’ per say–instead, what we want to focus on is one area. Say, it’s the left leg–and even more specifically, the tibia. According to Tufte’s definition of beautiful evidence, every image presented must reside within the universal measurement grid (45). So, connecting back to the example I discussed above, what we are concerned with, is the portrayal of relationships within a given body of knowledge–showing things in context with one another provides for a local and precise way of understanding.
Tufte also discusses explanatory mappings and the practice of exploratory image analysis. Explanatory mappings appear in scientific research, newspapers, textbooks, technical manuals, legal proceedings, engineering reports and medical research (45). However, they are not constrained exclusively to these fields of discipline; they also extent into the arts and humanities and many times are interdisciplinary, because they represent complex information.
Below is image is from a journal article in Current Opinion in Neurobiology; an example of an explanatory mapping.
Below, this image is a representative time-space map of the USA belonging to an article titled, The shrivelled USA: representing time–space in the context of metropolitanization and the development of high-speed transport from The Journal of Transport Geography.
During a discussion centered on one of the interactive mappings in Fighting to Live, one of my classmates commented, I don’t know when I’m supposed to stop and when I’m supposed to look at the images.
Regarding the page’s architecture of information, my classmate’s comment was reflective of bad design in terms of the page’s directional signifiers. In sum, just as a freeway has road signs and indicators of when to stop and when to go, when to turn here and exit there, multimodal mappings are beautiful evidence of what they represent only when elements therein properly signify or ‘point to’ what they were intended to, and result in a clear transmission of the message.