PHL145H5 Study Guide - Final Guide: Prq, Prnp, If And Only If
Document Summary
Chapter 11: strong arguments have premises that raises the probability of its conclusion or make their conclusions likely. An argument p1,,pn / c is inductively strong iff (i) prp(c) > pr(c) and (ii) But it is a mistake to think this affects the probability from one toss to the next. A heuristic is a general rule or strategy for solving some kind of problems. Human beings have evolved to rely very heavily on heuristics, probably as a way of conserving computational power generally speaking these heuristics don"t lead us astray. Since p and p are inconsistent, pr(p p) = pr(p) + pr( p). By the def of conditional probability, prq(p) = pr(p q) pr(q). Since p and q are independent, prq(p) = pr(p).
