Leontiskos

Here: A reductio is not truth-functional. If we want to stick to strict truth functionality then we cannot accept reductios. In that case we can only ...

I'm sorry, but as someone who thinks that material implication is an example of the principle of explosion you are out of your depth here. Material im...

Sure, so long as we are recognizing that "to rule it out" is a special move, unique and irreducible to any other move in classical logic. Specifically...

This strikes me as a strawman, but perhaps we can let it stand as a warning. Perhaps you wish to warn, "You may not be doing this, but be sure that yo...

- We are very far beyond Wikipedia at this point. At this point one can no longer simply appeal to authorities and logic machines. They have to set ou...

I noticed that there is in fact a second problem with your reductio. You told me that in classical logic contradictions are to be treated as false, bu...

Some call it a "supposition," but they are fooling themselves if they think this answers my objection.

I think there is a mystery why we can say it is false in this case. What rule of inference in classical logic are we appealing to? my point has been t...

You're reaching. :wink: I have given my arguments, I have already responded to these charges. At this point you either have an argument for "?¬A" or y...

Not well.

- Yikes. :yikes: You're doubling down on that? I wonder if you will have trouble sleeping on such non-existent arguments?

Again: Are you saying that if your logic professor asked you to justify an answer to my question you would tell him, "This guy on the internet set out...

You think you get to arbitrarily reject (2) instead of (1) because I gave an example of the unaccountable inference that some in this thread are drawi...

- That's fair. Neither one of us has really made any arguments in this exchange. My point though, was that arguments had already been made in the exch...

I am attributing the modus tollens to you because you are the one arguing for ¬A. If you are not using modus tollens to draw ¬A then how are you doing...

- It's your second post and you're already out of arguments?

Nonsense. People succeed in this sort of thing all the time without legal means. @"Michael" has literally been arguing that the landlord would only ho...

Working again in the context of this post, consider its first argument: A?(B?¬B) ? ¬A Now consider the way that is interpreting this first argument (a...

I read his responses to Lionino, but many of those posts are just completely blank. He deletes what he wrote. His ready-made approach doesn't answer t...

I've been ignoring Tones, as he is a pill and he inundates me with an absurd number of replies (15 in just the last 24 hours). Presumably he is the on...

See, for example: If you think that I am speaking about, "how to treat the truth value of a contradiction apart from the system that sets out how a tr...

*Crickets* again? You are contradicting yourself. You know it is rational to invoke your landlord's promise, and you would do so in real life, but in ...

But if one knows about the butterfly effect, are such effects still accidental? In any case, it would be difficult to know about the butterfly effect ...

Right, but that's why your original objection doesn't hold. All that is needed is a spectrum. I would actually consider a spectrum a standard. This is...

Yeah, this is weird stuff. Much of it goes back to what I said earlier, "When we talk about contradiction there is a cleavage, insofar as it cannot st...

Here is something I wrote when my internet was out, and before I was able to read this post of yours. I will read what you have written after posting ...

It is the kind of equivocity present in analogical predication, where a middle term is not univocal (i.e. it is strictly speaking equivocal) but there...

Compare: A?(B?¬B) ? ¬A With: A?(B?¬B) ¬(B?¬B) ? ¬A Whether or not we affirm the negation of the consequent, the antecedent still ends up being false. ...

Isn't this a fairly big problem given that (¬¬A?A)? I take it that this is the same thing I have pointed out coming out in a different way? Namely the...

- He confuses what is achievable with what is deemed to be achievable in the same way that he earlier confused what is wrong with what is deemed to be...

- Thanks Lionino. Good reminders and clarifying points. Edit: I underestimated your post. Like your first post, this is far above and beyond anything ...

The Bible has a very high view of promising, a very high view of God's word (dabar): God's word is associated with his power. Why? Because the one who...

Yep. :up:

Then suppose you invoke the promise and he says, "Oh sorry, I forgot about that. Never mind." Is he being irrational in this? Is he deluded and engage...

If you think the obligation is bullshit then how can you tell me that it was rational to pay him $975?

That's right, and so I ask again: would it be rational for you to invoke his promise when he tells you that you underpaid?

Right, but how would it be rational to depend on his promise if obligations don't exist? If it is rational to write the check for $975, then it must b...

So was it irrational to write the check for $975 rather than for $1000? Are you claiming that you would never have written the check for $975?

And why is it plausible that it might work? Why would this move plausibly convince him to do as you wish?

So you would invoke his promise in order to convince him that he should not require an additional $25?

I am wondering if I have recourse. What would you do in that situation? Would you invoke the promise he made? Why?

Whenever your position falls apart you bury your head in the sand.

I tell my landlord that I replaced the furnace filters. He tells me, "Thanks, go ahead and deduct that from your rent." At the beginning of the next m...

Honest intentions to do what!? This completely begs the question. Do you admit that promises have an enormous impact on day to day life?

Oh really? So when I tell my friend, "I intend to marry that woman over there," who holds my promise? Who is the promisee? You haven't even figured ou...

Focusing only on the last few pages, and ignoring the 'penalty' conversation which you seem to have in large part already conceded:

I'm glad we're on the same page! (And I'm also glad you threw in the towel on your attempt to remove fault from punishment.) Here is some of the crazy...

For something to be seen to be a punishment it must be seen to be in response to wrongdoing. So as I said: The mafia who does so may be punishing or e...

You're missing the word "wrong" at the very end of your sentence. You left your garage door open. The thief stole your car (because of something you d...