PHILOS 2 Lecture Notes - Lecture 2: Headache, Modus Tollens, Modus Ponens
Document Summary
Basics in philosophy logical terms and reasoning. Both claims can"t be true, but they can both be false (example: wall = white, wall = Both can"t be true at the same time, but one can be true and the other false. Inconsistent claims are claims that can"t both be true; there are two types: contrary claims beige -> wall can"t be both colors, but it can be neither colors, contradictory claims. We can represent claims with letters such as p and q . For complex sentences we can associate letters with other symbols. I"ll go to the movies, i mean, only if i study. If i study though then i can"t have a headache. (i just can"t get any studying done if i have one). P is the antecedent and q is the consequent. If p then q; p only if q are the two conditionals. P is sufficient for q. q is necessary for p.
