Buzz waarom wordt iets viral (of toch niet)

"Jonah Berger is a professor at the Wharton School of the University of Pennsylvania. He is an world-renowned expert on word of mouth, viral marketing, social influence, and how products, ideas, and behaviors catch on. He has published dozens of articles in top‐tier academic journals, teaches Wharton’s highest rated online course, and popular accounts of his work often appear in places like The New York Times, Wall Street Journal, and Harvard Business Review. Berger is the internationally bestselling author of multiple books including Contagious: Why Things Catch On (half a million copies are in print in over 30 languages) and Invisible Influence: The Hidden Forces that Shape Behavior.

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