Give me summary of the book "Contagious: Why Things Catch On" by Jonah Berger

Contagious: Why Things Catch On by Jonah Berger is a book that examines why certain products, ideas and behaviors become popular and spread rapidly.

Berger identifies six key elements of “social currency,” “triggers,” “emotion,” “public,” “practical value,” and “stories” that make a product or idea more likely to be shared.

Berger examines the use of these elements in popular products and campaigns such as the iPhone, Twitter, Kony 2012 and Hotmail, and provides strategies for businesses to create messages that will gain traction with their target audience.

Berger argues that in order to be contagious, a product or idea must have a “social currency” that makes it valuable to share with others.

Additionally, Berger stresses the importance of “triggers” in order to get a message to spread. Triggers are cues that remind people of a product or idea, and these can be found in ads, packaging, and even conversations.

Berger also highlights the importance of emotion in making a message contagious, as people are more likely

He also provides tactics for businesses to use to become remarkable, such as making bold changes and taking risks.

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