There was some research at IBM, which I have tried to find a reference for, that tested: "What if we wanted to build a better word processor, after having compl

There was some research at IBM, which I have tried to find a reference for, that tested: "What if we wanted to build a better word processor, after having completely solved speech recognition?" They devised an experiment where the subject, given the task of say creating a document, would speak and "the system" would respond by entering text and the usual things that word processors do. "The system" was a CRT and a human confederate behind a curtain who would type stuff and otherwise respond to the subject's commands.