Sublime

wide bridges between them.

social redundancy makes people accountable.

the social distance they spanned—what I call reach.

Coordination: Some innovations are appealing only if people use them together.

Credibility: Some innovations encounter skepticism about their effectiveness or safety.

Network centralization made the entire population—both Democrats and Republicans—biased toward the central person’s viewpoint.

people are sensitive to issues of legitimacy, coordination, or social proof—are often the ones people are most committed to once they finally adopt them.

There is very little social redundancy in weak ties.

Complex contagions are contagions that people resist.