Sherlock Holmes, the fictional sleuth who famously resides on Baker Street, is known for his impressive powers of logical reasoning. With a quick visual sweep of a crime scene, he generates hypotheses ...

The paper reviews three modes of rational inference: deductive, inductive and probabilistic. Many examples of each can be found in scientific endeavour, professional practice and public discourse.

The last few decades and the rise of mass media, the choice between two options what I term ‘dichotomies of dualities’ has become the root of news television. The application of this principle has led ...

As this is the fourth edition—though enlarged and partly re-written—of the work under notice, it is not necessary to review it in detail. It is sufficient to mention, by way of reminder, that for the ...

Inductive proofs; the concept of ‘a posteriori’. Cosmological argument: St Thomas Aquinas’ first Three Ways – (motion or change; cause and effect; contingency and necessity). The Kalam cosmological ...

We have seen that we can deduce new conditionals from old. But where do we get conditionals to start with? Fortunately, we can get conditionals from our three principles. Premise (5) in the LSAT ...

All people are mortal. Socrates is a person. Therefore: Socrates is mortal. This is the classic example of the West’s preferred form of reasoning— deductive logic. We have long professed to prefer it ...

Catalog description: Introduction to deductive logic. Topics include: basic concepts of deductive logic; techniques of formal proof in propositional and predicate logic. 3 units. Prerequisites: No ...