Why do entire groups suddenly become obsessed with the same thing?
Attention is contagious long before ideas are.
Yesterday nobody cared.\n\nToday everybody talks about it.\n\nThe hidden mechanism is shared obsessions.\n\nHumans copy attention socially.\n\nPopularity attracts curiosity.\n\nCuriosity creates momentum.\n\nPeople think trends spread because they are good.\n\nVery often, they spread because they are visible.
