Motivation-Over the past decade there has been an dramatic increase in 1) Available modes of interpersonal communication and the range in quality of these modes of communication in terms speed, reliability, and flexibility 2) Reductions in the price of these modes of communication-long-distance telephone service, FAX machines, on-line information services CompuServe and America Online (zero price for incremental messages)
Over the past century there has been an dramatic increase in communication modes.