William Crossman outlines his approach in his book:

VIVO [Voice-In/Voice-Out]: The Coming Age of Talking Computers
by WILLIAM CROSSMAN

Product Description: (from his web site http://www.compspeak2050.org/Pages/Introindex.html)
A positive look at how talking computers, VIVOs, will make text/written langauge obsolete, replace all writing and
reading with speech and graphics, democratize information flow worldwide, and recreate an oral culture by 2050. Text
is an ancient technology for storing and retrieving information; VIVOs will do the same job more quickly, efficiently, and
universally. Among VIVO's potential benefits: 80% of the world's people are functionally nonliterate; they will be able to
use VIVOs to access all information without having to learn to read and write. VIVO's instantaneous translation function
will let people speak with other people around the world using their own native languages. People whose disabilities
prevent them from reading and/or writing will be able to access all information. Four "engines" are driving us irreversibly
into the VIVO Age and oral culture: human evolution, technological breakthroughs, young people's rejection of text, and
people's demand for text-less, universal access to information. Future generations, using eight key VIVOlutionary
learning skills, will radically change education, human relations, politics, the arts, business, our relation to the
environment, and even human consciousness itself. Worldwide access to VIVO technology looms as a key human rights
issue of the 21st century.

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