PHIL 105 Lecture 8: Lecture 8
16 Mar 2016
School
Department
Course
Professor
Document Summary
Arguments well-formed ill-formed valid cogent sentential predicate or categorical. The de nition is hypothetical . example: if i had two heads, a lot of people would stare at me. An argument is valid if and only if (iff) it follows a pattern such that it is impossible for any argument following that pattern to have true premises and a false conclusion. If each of its premises and its conclusion can be written in one of the four standard forms from categorical statements, it is intended to be valid. (see question #3 below) = yes, which means all a are b. We would have to change it to this in order to use the four rules. There is an a that is a b. If something is a dog, then it"s a mammal. Whether its a good idea to change it or not, depends on the rest of the argument.
