The first art in caves were really psychedelic experiences, and the reason that they were is because the tribal encyclopedia, the amount of information that people needed to know in order to move to a new way of life, suddenly increased over that period of time.
Howard RheingoldAdvertising in the past has been predicated on a mass market and a captive audience.
Howard RheingoldInexpensive phones and pay-as-you go services are already spreading mobile phone technology to many parts of that world that never had a wired infrastructure.
Howard RheingoldJournalists don't have audiences, they have publics who can respond instantly and globally, positively or negatively, with a great deal more power than the traditional letters to the editor could wield.
Howard Rheingold