- Photo
- —
- Name
- —
- Field
- Social network theory / sociology
- Year
- 1973
- Author(s)
- Mark S. Granovetter
- Core idea
- Loose, “weak” social connections are disproportionately powerful for spreading information and creating opportunities.
- Why I care
- Explains why tiny social features (follows, lightweight sharing, referrals) can outperform giant in‑product billboards when you’re trying to grow.
- Great for
- Referral flows, virality loops, B2B invite mechanics, and anything community‑ish.
- Key concept to Google
- Bridging vs bonding social capital
- Difficulty
- Medium—classic sociology style, but the main punchline is super portable.