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videotex: n. obs. An electronic service offering people the
   privilege of paying to read the weather on their television screens
   instead of having somebody read it to them for free while they
   brush their teeth.  The idea bombed everywhere it wasn't
   government-subsidized, because by the time videotex was practical
   the installed base of personal computers could hook up to
   timesharing services and do the things for which videotex might
   have been worthwhile better and cheaper.  Videotex planners badly
   overestimated both the appeal of getting information from a
   computer and the cost of local intelligence at the user's end.
   Like the gorilla arm effect, this has been a cautionary tale
   to hackers ever since.  See also vannevar.