Sam26

I'm taking your question to be tongue-in-cheek. Objective truth should be contrasted with subjective truth. Objective truths are quite mind-independen...

Keep in mind that I am not trying to give a Wittgensteinian view, although I am using some or many of Wittgenstein's ideas, i.e., I am trying to expan...

Logic Post 34 Fallacies Continued... Fallacies of Neglected Aspect: 1) Hasty Generalization: One reaches a conclusion based on very little evidence (i...

Logic Post 33 Inductive Reasoning: Inductive arguments do not guarantee the conclusion, as do deductive arguments. If a deductive argument is sound (i...

Logic Post 32 Fallacies continued... We have already discussed some fallacies that can take place in valid deductive forms, but there are many other k...

Logic Post 31 We have already talked about how invalid formal arguments are fallacious. We also mentioned that fallacies go beyond the scope of validi...

Logic Post 30 Fallacies: There are two kinds of fallacies, formal and informal. Formal fallacies are associated with deductive argument forms, i.e, th...

Logic Post 29 It's best when constructing a formal proof to find the general form of the argument, and not let the complexity of the proof confuse you...

:grin: You could do that StreetlightX.

Work on what Wiki articles?

Logic Post 28 Construct proofs for the arguments that follow. These arguments were taken from Kegley and Kegley, Introduction to Logic, pp. 277 - 278)...

Logic Post 27 The following are proofs of validity for particular argument forms. You should be able to find the justification, i.e., the rule of infe...

Logic Post 26 Which rule of inference corresponds with the following argument forms? Do your homework! 1) v (D · S) ~ (D · S) _____________________ ? ...

Logic Post 25 The Three Laws of Logic (Sometimes referred to as the Three Laws of Thought) 1) The Law of Identity: a. A is A or Anything is itself. b....

Logic Post 24 Enthymemes Enthymemes are arguments in which a premise or premises are left out. Sometimes even the conclusion is left out - it is suppo...

Logic Post 23 There is an important difference between the Rules of Replacement and the Rules of Inference. The Rules of Inference can only be used on...

Logic Post 22 Rules of Replacement You need to memorize these rules of replacement along with the rules of inference. 1) Absorption (p ? q) ? p ? (p ·...

I think the later Wittgenstein has contributed to a more careful linguistic analysis, which can lead to using language, especially in philosophy, in a...

The problem seems to be, as I've mentioned before in other threads, is that people seem to think that unless science proves X, then we can't know X. M...

Logic Post 21 Deductive Methods When analyzing arguments you want to look for forms that correspond to valid rules of inference. For example, consider...

I don't know where you get the idea that "true wisdom comes in questioning everything," I don't agree with that either. As I said earlier, this thread...

Ah, I see what you mean. Thanks. p q (p q) ? q _______________________________________________ T T T T T T T T F T F F T F F T F T T T T F F F T F F F

It looks a bit better now I think.

Ya, they are hard to read. I'll try to line them up.

Hopefully there aren't too many errors. :gasp:

Logic Post 20 Rules of Inference While it is true that truth-tables are very good at testing the validity of truth-functional arguments, they tend to ...

Logic Post 19 Tautologies, Contradictions, and Contingent Sentences Before going on we will examine the differences between tautologies, contradiction...

Logic Post 18 Biconditionals Two statements are materially equivalent if they have the same truth-values. The symbol ? is the symbol we are using in t...

Logic Post 17 There is much that can be accomplished using the ? symbol. For instance, using the definition of the ? symbol we can get the valid argum...

Logic Post 16 Conditional Statements and Material Implications A conditional statement is a statement that is composed of two component statements joi...

Logic Post 15 Disjunction We will now consider a statement joined by the truth-functor symbol v. When two statements are connected by the truth-functo...

Those of you who remember Ephilosopher (the philosophy forum), most of this comes from a thread I did back then on logic. I'm revising parts of it as ...

Logic Post 14 Conjunction When two sentences are joined together by the truth-functor and, they are called conjuncts; and compound sentences formed by...

Logic Post 13 Continuing with truth-tables Negation The · symbol that is used as a sentence connective is a kind of operator, that is, it can operate ...

I'm skipping over categorical deductive logic, which was originated by Aristotle in the Organon.

Logic Post 12 Continuing with symbolization... What is a statement-form? A statement-form is a proposition that consists of logical symbols (? · ?? ~)...

Thanks.

Ya, well, we would disagree there.

Yes, that's true, and I mentioned this above to Harry. You can always rephrase a question and turn it into a statement. However, the question by itsel...

You should start your own thread on why questions should be considered propositions. The question is settled for me, I'm not going to debate it.

Logic Post 11 Before I go any further, I should give some of the symbols used in logic, and their meanings. I don't want to assume that everyone knows...

Logic Post 10 There are two kinds of arguments in logic, deductive and inductive arguments. We will first discuss deductive arguments. Deductive Argum...

These posts may help some of you with the basics in logic, but it's not like taking a course. However, you don't need to take a course in logic to bec...

Logic Post 9 Logical vs Non-logical Material One of the problems in analyzing many arguments is separating the logical material from the non-logical m...

Buy a used logic book, that should help. Here is a cheap used one. https://www.thriftbooks.com/w/introduction-to-logic_jacquelyn-ann-k-kegley_charles-...

Logic Post 8 The five general categories of language are the following: 1) Cognitive (Informative) Function. Language is used to convey information. A...

This problem has always fascinated me. The answer, I believe, lies in the complexity of language, the complexity of the human condition, psychology of...

Logic Post 7 Dimensions of Language Since logic is concerned with both communication and understanding it will be important to sort through some of th...

We are not talking about meaning, but whether the sentence can be said to be true or false. A question just isn't considered a proposition that assert...

The point is that the question "Who is the third president of the United States?" is not a true or false statement/proposition. It doesn't make sense ...