Introduction to Formal Logic by Peter Smith. Covers the basics, from propositional logic to first order logic. Instead of using natural deduction, it ...
I agree with you. That is why I asked Terrapin Station to clarify his position, for it seems to me he asserted that the purpose of Philosophy is to ga...
It could well be that " 2+2 =4" is true for all humans, if not " universally true", whatever that would mean. Such relations are just presupposed in o...
I re expressed some of the formulas. Proving the conclusion using the 3 premises would be equivalent to proving that the initial implication is true. ...
Hi. You could try breaking the implication into smaller expressions and treating them as an argument. You have 3 main conjuncts in the antecedent; tre...
Hello. Can you please state what you understand to be a tautology? If someone asks a mathematician or logician to prove "1+1=2", they will do so using...
People do not exist in vacuums. Z entrepreneur is not solely responsible for starting "massive industrial production". He is relying on existing socie...
"And which of you, by being anxious, can add even one hour to their lifespan?" Even if a whole society is dysfunctional (which is most probably not th...
We have been put to sleep, as it were, by the mass-media wielding masters of mankind, so that they can more easily go about their business. At least t...
It is obvious, you've said it on multiple previous occasions, that you don't believe in there being truth or falsity in judgements concerning such thi...
I'm curious as to how you perceived that chapter in which Alyosha dreams about the marriage at Cana. Well, maybe not how you perceived it, but how did...
I wonder, is this condition of yours a result of some sort of hyper-normalization of the (I'm assuming) 1st World around you? Not often being aware of...
You cannot stop life. Even if all humans stopped reproducing and went extinct, there would remain most of the animals, which would probably flourish u...
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