LIGN 130 Lecture Notes - Lecture 3: Gödel, Escher, Bach, Deductive Reasoning, Logical Consequence
12 Apr 2017
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Under which conditions a sentence (declarative clause/statement) would be true or false. The two sentences trigger the same truth conditions. Mary kissed john, john was kissed by mary. Two sentences that are never true at the same time. What is the difference between semantic meaning and speaker meaning. Semantic meaning: what the sentence conveys no matter what. It is a day in sd on 04/11 at 4pm. It is night in sd on 04/11 at 4pm. Saying the same thing twice in different words. D hofstadter wrote a book about paradoxes. Because the meaning is different, the following are not entailed. A sentence x (or a pair of sentences x and y) entails a sentence z if in any situation in which x (or x and y) are true, then z is true as well. Entailment is only one kind relationship between sentences.
