The Deviously Simple Plan:
Edward Bernays, aka the godfather of spin and the forefather of modern PR, was given a simple task: sell bacon like a motherfucker. Bacon seller Beech-Nut Packing realized that sales of their products were slipping and they hired Bernays to fix that. Seeing as this was the same Bernays who convinced women that smoking was totally the best way to stick it to men back in the '30s, they figured he was up to the task.
The Bacon Wiki
Bacon's much easier to sell than lung cancer, though only slightly less deadly.
His target would be a specific meal: breakfast. Now, at the time, breakfast wasn't considered a big, heavy meal -- it was a cup of coffee and some toast for most people. Bernays needed to convince America that breakfast was Bacon Time.
Being the nephew of the legendary Sigmund "You're always thinking about wangs" Freud, Bernays knew that to a customer, the words of famous spokespeople were nothing compared to the words of a trusted professional. So Bernays approached a doctor with a simple question: Was a hearty breakfast better for a person than a smaller, shittier one?
"So basically you're asking me if size matters?"