sboswell@sdcc13.ucsd.edu (....What Is?....) (06/22/91)
Has anyone done for "yes, no, unknown" what Boolean algebra did for "yes, no"? I'm writing a Prolog-like engine for "yes, no, unknown" and would like to avoid reinventing the wheel on this as much as I can. Please mail answers, I will post a summary. Thanks in advance! If this has been discussed thoroughly already, well, we all gotta learn it somehow... :) Steve Boswell whatis@gnu.ai.mit.edu whatis@ucsd.edu