When we look at our evidence to weigh the truth of a premise in an argument, it is rarely certainly true or certainly false. The rules of probability allow us to calculate degrees of certainty and uncertainty. Learn a few basic principles that sound reasoners should understand: how we come up with probabilities, how to determine the probability of a disjunction, conjunction, or conditional, and common mistakes that people make with probabilities.
- 13.1 Weighing the Evidence
- 13.2 Probability and Logic
- 13.3 Conditional Probabilities