A memorable story from Chip and Dan Heath’s book, Made to Stick: Why Some Ideas Survive and Others Die (2007):
Art Silverman stared at a bag of movie popcorn. It looked out of place sitting on his desk. His office had long since filled up with fake-butter fumes. Silverman knew, because of his organization’s research, that the popcorn on his desk was unhealthy. Shockingly unhealthy, in fact. His job was to figure out a way to communicate this message to the unsuspecting moviegoers of America.
Silverman worked for the Center for Science in the Public Interest (CSPI), a nonprofit group that educates the public about nutrition. The CSPI sent bags of movie popcorn from a dozen theaters in three major cities to a lab for nutritional analysis. The results surprised everyone.
The United States Department of Agriculture (USDA) recommends that a normal diet contain no more than 20 grams of saturated fat each day. According to the lab results, the typical bag of popcorn had 37 grams.
The culprit was coconut oil, which theaters used to pop their popcorn. Coconut oil had some big advantages over other oils. It gave the popcorn a nice, silky texture, and released a more pleasant and natural aroma than the alternative oils. Unfortunately, as the lab results showed, coconut oil was also brimming with saturated fat.
The single serving of popcorn on Silverman’s desk—a snack someone might scarf down between meals—had nearly two days’ worth of saturated fat. And those 37 grams of saturated fat were packed into a medium-sized serving of popcorn. No doubt a decent-sized bucket could have cleared triple digits.
The challenge, Silverman realized, was that few people know what “37 grams of saturated fat” means. Most of us don’t memorize the USDA’s daily nutrition recommendations. Is 37 grams good or bad? And even if we have an intuition that it’s bad, we’d wonder if it was “bad bad” (like cigarettes) or “normal bad” (like a cookie or a milk shake).
Even the phrase “37 grams of saturated fat” by itself was enough to cause most people’s eyes to glaze over. “Saturated fat has zero appeal,” Silverman says. “It’s dry, it’s academic, who cares?”
Silverman could have created some kind of visual comparison— perhaps an advertisement comparing the amount of saturated fat in the popcorn with the USDA’s recommended daily allowance. Think of a bar graph, with one of the bars stretching twice as high as the other.
But that was too scientific somehow. Too rational. The amount of fat in this popcorn was, in some sense, not rational. It was ludicrous. The CSPI needed a way to shape the message in a way that fully communicated this ludicrousness.
Silverman came up with a solution.
CSPI called a press conference on September 27, 1992. Here’s the message it presented: “A medium-sized ‘butter’ popcorn at a typical neighborhood movie theater contains more artery-clogging fat than a bacon-and-eggs breakfast, a Big Mac and fries for lunch, and a steak dinner with all the trimmings—combined!”
The folks at CSPI didn’t neglect the visuals—they laid out the full buffet of greasy food for the television cameras. An entire day’s worth of unhealthy eating, displayed on a table. All that saturated fat—stuffed into a single bag of popcorn.
The story was an immediate sensation, featured on CBS, NBC, ABC, and CNN. It made the front pages of USA Today, the Los Angeles Times, and the Washington Post’s Style section. Leno and Letterman cracked jokes about fat-soaked popcorn, and headline writers trotted out some doozies: “Popcorn Gets an ‘R’ Rating,” “Lights, Action, Cholesterol!” “Theater Popcorn Is Double Feature of Fat.”
The idea stuck. Moviegoers, repulsed by these findings, avoided popcorn in droves. Sales plunged. The service staff at movie houses grew accustomed to fielding questions about whether the popcorn was popped in the “bad” oil. Soon after, most of the nation’s biggest theater chains—including United Artists, AMC, and Loews—announced that they would stop using coconut oil.
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