I've been doing some thinking on self-referencing statements and the problems they imply. For example: THIS=TRUE is both true and false THIS=FALSE is neither true nor false THIS>TRUE is both true and false THIS>FALSE is neither true nor false THIS > X implies itself and x (using the fact that THIS = (THIS > X)) etc... I was wondering if the people here could shoot down this idea: A self referential statement is true if and only if it implies itself. THAT(written) = (THAT(value) > THAT(written)) Given this, we would get: (THIS=TRUE) = (THAT > THAT=TRUE) = TRUE > TRUE = TRUE (THIS=FALSE) = (THAT > THAT=FALSE) = FALSE and we wouldn't be able to imply X using (THIS > X) because once we get THIS = (THIS > X) we have change it to THAT = (THAT > (THAT = (THAT > THAT))) before we can evaluate it. I suppose what I'm looking for here are interesting statements that break this rule. I know it doesn't handle indirect self-reference.