Sometimes I hear arguments that seem to appeal to the fact that something is morally permissible because it is legally permitted. For example:
Abortion is moral because it's legally permitted. Killing two year olds is immoral because we have laws…
I'm a layperson interested in the problem of free will. I recently started reading one of the popular introductory textbooks to the subject. I'm halfway through, and while the book did describe a few of the most notable approaches to the problem of…
What is the difference between the implication/conditional truth function and the notion of logical entailment?
My naive understanding as a computer programmer is that the conditional is a function on two Boolean inputs, whereas entailment is some…
What is the exact difference between reductio ad absurdum and proof by contradiction?
Wikipedia used to state that:
Reductio ad absurdum (Latin: "reduction to the absurd") is a form of argument in which a proposition is disproven by following its…
Are the terms 'Ethics' and 'Moral Philosophy' different in extension as terms in philosophy? Some Departments of Philosophy have courses with titles like "Introduction to Ethics" and others with titles like "Introduction to Moral Philosophy."…
At some point in my life I think I've read what all branches of Mathematics had in common were numbers. But then I remembered a branch of the many Mathematics I had when I was an university student, and I didnt remember numbers in it. Then, I made a…
When you have a propositional sentence of the form P ⊃ Q — which we might read as "if P, then Q" — how can you tell when it is true, or false, based on the truth-values of P and Q in classical logic? When is this different from Q ⊃ P? And what is…
In my experience, many definitions define an object/idea by merely listing it's characteristics. For example:
Avocado
a large, usually pear-shaped fruit having green to blackish skin, a single large seed, and a soft, light-green…
It is usually said that the Bayesian probability is a subjective concept, quantifying one's degree of belief in something, while the frequentist probability is the the fraction of certain outcomes when observation is conducted many times (either in…
Dictionary definitions such as this one often seem to use the terms sentience, awareness, and consciousness as if they are synonymous with each other. Is this really the case? If not, how do they differ? Some books suggest that sentience and…
I've often wondered about the phrase "Acts of God", which is used in legal and insurance writing to mean disasters like hurricanes, floods, tornadoes, wildfires...
What are we thinking with a God that routinely does such things when the usual idea…
Predicate logic is somewhat like propositional logic, except that where propositional logic only works on the level of whole sentences (e.g. A = "Socrates is mortal", B = "All Scottish people eat their porridge plain"), it allows you to talk about…
In a preceeding question I have asked about the foundations of rational reasonning. It seems the concept of identity plays a key role. However "identity" is not observed in the real world: our mind creates identities.
For example if you see a…
We know the definition of "time" of Augustine of Hippo:
"If no one asks me, I know: if I wish to explain it to one that asketh, I know not" (Conf.).
What is time? Philosophically, what can be said about time in modern times? Moreover, does time…