pring of 1993: See “Vision-21: Interdisciplinary Science and Engineering in the Era of Cyberspace”, NASA Conference Publication 10129, Proceedings of NASA Lewis Research Center Conference, Westlake, Ohio March 30-31, 1993 p. iii 265 “Within thirty years”: See Vinge in “Vision-21” above p. 12 193 HOUSE_OVERSIGHT_018425 grids that fli