Notícia ruim corre depressa!

Translated title of the contribution: Bad news travels fast!

Luis E C da Rocha

Research output: Contribution to journalArticlepeer-review


Many proverbs are created through everyday experience. Although many of them are readily understood by ordinary people, a more detailed view generates many questions and doubts related to their credibility. Motivated by one of these proverbs, in the present paper, we analyse propagation of news in a network of electronic contacts (e-mails). More specifically, we propose transmission protocols intended to reproduce properties of real systems. These protocols are simulated in a real e-mail network and in the random network proposed by P. Erdo{double acute}s and A. Rényi. The results suggest that news spreads faster in the random network. The hubs in the real network tend to attract the news, in prejudice to the less connected nodes. Copyright by the Sociedade Brasileira de Física. Printed in Brazil.

Translated title of the contributionBad news travels fast!
Original languageUndefined/Unknown
Article number3303
Number of pages7
JournalRevista Brasileira de Ensino de Fisica
Issue number3
Publication statusPublished - 2009
Externally publishedYes


  • Complex networks
  • News propagation
  • Social networks


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