PHLA10H3 Lecture Notes - Lecture 2: Deductive Reasoning, Nuclear Power, Soundness
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Inclusive or - at least one is true (inclusive) we might have cake or pie on the menu today. Exclusive (just one, not both) you can either have cake or pie. A says at least one of us is a knave . C says either i am a knave or d is a knight . What is philosophy: philosophical questions, fundamental, general, conceptual analysis, why no philosophical labs, thought experiments. Some people are happy. (do the premises actually give you that conclusion?: all dogs have four legs. All dogs are animals. (in some rough sense, the premises make sense. The premise is not true, but the conclusion is. So fred lives in canada: philosophical interlude: what about this argument, definition: a sentence is positive if it does not contain any negations. A sentence that contains a negation is negative : consider this argument: all sentences are positive.
