Evolving the Origin of Species
Thursday, September 10th, 2009Ben Fry, creator of Processing (or Proce55ing for those that remember) and data viz guru at MIT, has an absolutely fascinating visualization of how Darwin changed the text of “The Evolution of Species” in the thirteen years following its publication.
The labels across the top are chapter numbers, the dashes underneath represent text from the book which you can see on mouse-over. The color bars indicate the different editions.
I called it fascinating on first look, but should probably be more measured or specific. I hate when we fail to distinguish between fact illustration (making a single thing visual) and data visualization (revealing previously unseen stories through a rich visual worth looking at several times). This falls somewhere in between. The final state of the chart, after the 6th, and lengthiest, revision does tell a story:

The most obvious part of the narrative is the addition of an entire section and extensive revisions to the final section in the 6th edition, indicating a structural bolstering of the argument and possibly responses to ten years of critique. The speckle patterns, small bits of color, show a lot of tinkering/revising in the first three editions. These all support Fry’s introductory point:
We often think of scientific ideas, such as Darwin’s theory of evolution, as fixed notions that are accepted as finished. In fact, Darwin’s On the Origin of Species evolved over the course of several editions he wrote, edited, and updated during his lifetime
I’m wondering, though, whether this illustration tells the story better than the text?
What does make it fascinating overall is the ability to mouse over the sections (the small gray and colored stripes) and read the text underneath. Might be a better tool (if the stripes were a little bit bigger and easier to mouse over) than it is a data viz.




