Tufte’s Sparklines In The Service Of Retail Discount Efficiency
March 21, 2008
I attended Edward Tufte’s “course” on information design a few weeks ago. The hundreds in attendance were clearly hungry for answers to the problems of everyday life. (It reminded me a bit of the time I saw Sri Sri Ravi Shankar when my friend tricked me into it by failing to correct the natural assumption that a Ravi Shankar at a performance hall in Washington, DC, would be bringing his sitar.) Tufte stokes their hunger by titling his events “Presenting Data and Information: A One-Day Course Taught by Edward Tufte” and by styling himself as professor-guru. He holds “office hours” during breaks. He does not invite questions from the audience, nor does he acknowledge those that are occasionally blurted out anyway.
I sat between a guy who designs machines that cut steel, and a woman who works in medical informatics for a hospital. They wanted to learn how to make their presentations better. Instead, they learned that the Napoleon took his soldiers on a death march through Russia and that Boeing engineers were afraid to sound the alarm when astronauts’ lives were on the line.
Ok, I’m being a little snarky. I actually have a lot of respect for what Tufte has done. His beautiful books are full of examples that show the artistry and breadth of information design. But his course is little more than a book tour that participants get to pay to attend. It’s fun, but it’s not a course.
Tufte spent a little too much time on a pet idea of his called sparklines, “data-intense, design-simple, word-sized graphics.” Actually, they’re pretty cool. My only concerns were that they pack *too* much information into too small a space, and in the wrong information intake context. If I’m in a text-reading rhythm, will I — or can I even — break that rhythm, switch to a graphics-reading mode, and then switch back again? I wasn’t so sure, though I remained open to the possibility.
When I got home that evening, I did a bit of online retail therapy to wind down. As ever, I visited RetailMeNot before closing a purchase. And there I saw sparklines, used perfectly.
I’ve never quite understood why a coupon code with a 30% success rate would work for me, and why one with a 90% success rate wouldn’t. I still don’t understand it, but with sparklines, I get a better picture of that strange phenomenon. Because I can see where in the sequence the successes and failures are, I also have a better sense of which coupon to try first. That appeals to my desire for efficiency in the service of optimum discount achievement.
What I like about this usage of sparklines is that it doesn’t break my rhythm. On RetailMeNot, I’m not in a fluid text-reading mode. I’m scanning the page and evaluating several different color, graphic, numeric, and textual indicators to decide which coupon code to try. In that context, the sparkline graphic fits right in.
Now, enough about consumerism. Can sparklines save the world? (At a discount?)