Social Currency
Make the sharer look informed, tasteful, insider, clever, or ahead of the crowd.
Jonah Berger
The Big Idea
Contagious is a field guide for making ideas travel through people instead of through paid media. The book's core move is practical: do not ask, "How do we get attention?" Ask, "What gives someone a reason to pass this along?"
The six STEPPS are not a checklist for gimmicks. They are lenses for diagnosing why one restaurant, product, rumor, campaign, or public-health message becomes talkable while another disappears. Spread begins when the audience gets a reward for carrying the message.
STEPPS Framework
Each hook gives the sharer a job: signal taste, remember at the right moment, transmit feeling, make behavior visible, help a friend, or smuggle the idea inside a story.
Make the sharer look informed, tasteful, insider, clever, or ahead of the crowd.
Attach the idea to cues that appear naturally in everyday life.
High-arousal feelings move people from noticing to forwarding.
Make the behavior observable so imitation has something to copy.
Package usefulness so people can help others with low effort.
Wrap the lesson in a narrative people can retell without losing the point.
Interactive Desk
Pick an ordinary seed, then toggle the STEPPS you can honestly build into it. The front page rewrites itself as your word-of-mouth architecture improves.
Current assignment
Field Notes
Give people a way to signal taste, expertise, generosity, or insider access when they talk about the idea.
Tie the message to a frequent environment, phrase, habit, day, or object so memory gets prompted.
Reduce the idea to a vivid scene, surprising fact, or useful script that survives being repeated.
If adoption is invisible, build public artifacts, rituals, badges, or defaults that others can notice.
Reader Marginalia
"People do not share randomly. They share because the act gives them social currency."
"Triggers turn memory into distribution."
"High-arousal emotion is the difference between noticing and forwarding."
"If behavior is invisible, imitation has nothing to copy."
"Useful information travels because helping someone else feels good."
"Stories are Trojan horses for ideas."
Practical Application
Use these actions when an idea is good but too quiet, too private, too generic, or too hard to retell.
Before writing the message, define how repeating it makes someone look: generous, early, tasteful, funny, competent, principled, or connected.
Pick one recurring trigger already in your audience's life, then rewrite the idea so that cue naturally reminds them to mention or use it.
Replace flat benefits with a moment of awe, urgency, surprise, delight, or righteous frustration that gives people energy to pass it on.
Create a public artifact, ritual, badge, receipt, phrase, or behavior that lets observers notice the idea without requiring an explanation.
Turn practical value into a compact pass-along asset: a checklist, rule of thumb, comparison, template, or timely recommendation.
Write the anecdote someone would tell at lunch, then make sure the product, behavior, or insight is essential to the punchline.
Closing Quote
"Ideas spread when sharing them makes people feel smart, useful, moved, and part of a story worth retelling."
HourLife distillation
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