Contagious

核心要点

Things spread because of how they are built, not because of luck or budget
People share what makes them look good and what is top of mind
High-energy emotions like awe and anger drive sharing; sadness shuts it down
Make private behaviour visible and give people useful things to pass on
Wrap your idea in a story people want to retell

本篇内容

Why some ideas spread and others die
Why would a Philadelphia restaurant sell a 100-dollar cheesesteak? Not to sell many of them, but to get people talking, and it worked, because the story travelled far beyond anyone who ever ate one.
Social currency and triggers
People share things that make them look clever, connected or in the know. That is social currency.
Emotion and the public eye
When we care, we share, but Berger found that not all feelings are equal. What matters is arousal, the physical activation a feeling produces.
Practical value and stories
People love to help each other, so useful things spread. A video showing a trick for shucking corn, a list of foods that keep well in a Delhi summer, a deal that saves real money: all of these get passed along because sharing them feels generous.
Designing for word of mouth
The deeper point of the book is that these 6 principles are a design checklist, not a list of lucky accidents. Before launching anything, Berger suggests asking: does this give people something remarkable to say, is it linked to a frequent trigger, does it stir a high-energy feeling, can others see it being used, does it help people, and is there a story wrapped around it?
Put it to work
This week, pick one product, post or project you want more people to talk about and run it through the 6 principles, giving yourself an honest score on each. Find the one remarkable detail that makes someone look smart for sharing it, and put that detail at the front of your message.

六种学习方式

为本书专门编写了可视化、思维导图、练习、场景、挑战和复习模式。