Re:Is this some kind of ploy? (Score 1)

People can learn to think logically without learning advanced maths or indeed any maths at all. Logical expressions such as negation, the conditional, etc. are just ways of making explicit what we do implicitly whenever we reason using language. If you want to teach people to think critically in a general sense, you can do that by canvassing examples of faulty logic in everyday situations using natural languages and a basic logical vocabulary. But trying to teach critical thinking indirectly via a specialized subject like mathematics seems to me an oblique way of doing it (unless you're specifically interested in improving mathematical reasoning).