Jeremy Birnholtz, Jeffrey Hancock, Madeline Smith, Lindsay Reynolds
Historically, the problem of coordinating opportunities for real-time communication has been dominated by the problem of co-presence. Before there was any interactive media, people had to be in the same place to talk. Visiting somebody's house ("calling," in the early sense) to see if they were available or scheduling a time to meet were both good ways of coordinating. Early media such as the telephone changed this process a bit, in that people no longer needed to be physically co-present to talk. Mediated co-presence (i.e., being on the phone at the same time) could offer a similar experience. And…
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