PHL145H5 Lecture 3: PHL145 Lecture 3 Notes
Document Summary
If the premises are false, it does nothing for the credibility of the argument. Exceptions could be if the relevant information is assumed to be common knowledge or common sense. Any source of information or misinformation we acquire from others. How is this relevant: our premises are often based on the claims of others, evaluation of arguments often requires background knowledge obtained from testimony. Important to realize most of our knowledge, if not all, we have learned from others. When we evaluate the truthfulness of the premises, we use knowledge we learn from others as background knowledge. Drug x will cure my disease. (premise 1) You should to take drugs that will cure you. (premise 2) We rely on the research done by some authorities or experts. P1 e is an expert or subject s. (premise 1) P3 e says that x is true. (premise 3) Despite e being an expert, e could be mistaken.
