Rory Švarc’s Reviews > Rational Ritual: Culture, Coordination, and Common Knowledge > Status Update

Weak links are more efficient at spreading information, but strong links more accurately predict collective action. Why? Common knowledge; in strong-link networks, friends of friends are likely to be friends, & you'll not only know that others will participate, but you'll know that everyone knows: "weak links might be
better for communicating widely, but strong links are better at forming common knowledge locally."