OPINION: Nike's advertising campaign for the World Cup is filled with "Easter eggs," similar to marketing strategies deployed by Taylor Swift and the film industry. Design by Grace Hughes, Photos by Kate Green/Getty Images, Luke Hales/Getty Images, Alex Livesey/Getty Images, Marius Nordnes / Nordnes Foto/Getty Image Nike has turned me into a conspiracy theorist. Let me explain. It all started last week, when I attended Nike’s kickoff event for the World Cup.