Mark Granovetter shows how social networks shape information, trust, opportunities, and collective action. Neither isolated individuals nor completely closed groups are sufficient as an explanation. Weak ties can carry new information between circles; economic decisions are embedded in relationships; and participation often depends on what others have already done.
The Strength of Weak Ties
Strong ties often provide support, closeness, and trust. But people who know each other well also often know the same people and have access to the same information. Weak ties—acquaintances, former colleagues, and peripheral contacts—can serve as bridges between networks and introduce opportunities that the close circle does not see.
Weak ties should not be romanticized. They can provide information but rarely replace care or long-term solidarity. For a good life, different ties are needed for different tasks. A bridge can open a door, while stronger relationships often help us stay put and deal with the consequences.
Activate a weak tie through reciprocity
Purpose: To open a channel of information without treating acquaintances as tools.
Choose a real-world goal where your inner circle lacks relevant information.
List five weaker ties who are in different environments or networks.
Choose a person it is reasonable and respectful to contact.
Formulate a brief and clear question, and offer something useful in return.
Follow up on the contact without making demands, and note which new path has become visible.
Afterward: A good network contact respects the actual strength of the relationship and leaves room for a “no.”
Limitations and when not to do this exercise: Do not contact people in a position of dependency or use private information to gain access.
Economic action is socially embedded
Granovetter criticizes the view of economic decisions as either entirely autonomous or entirely governed by norms. Action is embedded in concrete relationships. Trust, recommendations, past conflicts, and network position influence who receives information, credit, and cooperation.
Embedding can reduce uncertainty but also create favoritism, dependence, and exclusivity. A good analysis therefore asks which relationships the decision is based on, who lacks access, and what formal safeguards are needed when trust is not enough.
Create an embeddedness map of a decision
Purpose: To identify the relationships behind a decision that appears to be purely individual or economic.
Choose a decision related to work, a purchase, housing, or collaboration.
List the people and organizations that convey information or instill trust.
Highlight past relationships that influence whom you trust.
Identify who lacks a network connection to the decision.
Add an open criterion or a check that reduces arbitrariness without undermining existing trust.
Afterward: The map illustrates both the value of the network and the need for transparent procedures.
Limitations and when not to do this exercise: Do not share sensitive financial information. Major decisions require relevant legal or financial advice.
Thresholds in Collective Behavior
People may have different thresholds for participating in an action. One person joins in when another has already done so, another when half are participating, and a third only when almost everyone is on board. Small differences in thresholds and order of participation can therefore lead to very different collective outcomes.
The threshold model shows why a group’s silence does not necessarily mean consent. Many may want the same change but wait for a visible first step. Leadership can then consist of lowering the cost of early participation and making support visible without pressuring people.
Build a Stepping Stone to Collective Action
Purpose: To design multiple pathways into a collective initiative for people with varying levels of risk and preparedness.
Choose a harmless change that several people have expressed interest in.
List forms of participation ranging from very small-scale to more public engagement.
Ask a few stakeholders what kind of support would lower their threshold.
Organize the levels so that early participants are not unnecessarily exposed.
Test the smallest scale and make the next step contingent on actual feedback.
Afterward: Collective action can grow when people see reasonable steps and realize they are not alone in taking risks.
Limitations and when not to use this exercise: Do not use this exercise to gauge political views or expose people to reprisals.
Bridges and Gaps in the Network
A bridge connects parts of a network that otherwise have few paths between them. The bridge position can facilitate information and coordination, but also control what passes through. The advantage arises from the patterns of relationships, not just from personal skill.
Bridge-building can create access to knowledge and community but should not make a person indispensable. A sustainable bridge creates more direct relationships and distributes the role of mediator.
Build a bridge that doesn’t make you a bottleneck
Purpose: To bring two networks together while simultaneously expanding access.
Choose two groups that would benefit from connecting.
Write down what information or resources are not being passed on.
Check with both groups to ensure that contact is desired.
Set up an initial meeting or a channel with a clear purpose.
Arrange for follow-up immediately so that not everything goes through you.
Afterward: A good bridge increases others’ ability to act and, over time, becomes less necessary.
Limitations and when this exercise should not be done: Do not disclose personal information or confidential matters without explicit consent.