Pattern-chaser wrote: ↑September 29th, 2023, 8:06 am
Our only disagreement is your use of the word "logical", because you seem to be using a vague and everyday use of the word, when what is really meant is perhaps "sensible", or even "reasonable" (using everyday parlance). The word "logic" carries a variety of shades of meaning, and describes different types of logic, Boolean logic, formal logic, and so forth...
...It is totally OK for us to follow chains of reasoning that are subjective, but it is not correct to refer to such musings as "logical", because they are not, or they are only partly logical...
Good_Egg wrote: ↑October 3rd, 2023, 7:56 am
I'd agree that "logic" is used in slightly different senses.
To my way of thinking, wherever you have a "chain of reasoning", then the question arises as to whether the truth of one link in the chain follows from the truth of previous link, and that's a common meaning of the word "logic".
I think that's pretty close to the formal definition of logic. It's a simple and primitive set of rules that allow us to confirm, or not, the validity of an argument, as opposed to its contents. It is used in many contexts, as you say. And I would emphasise once more, in this topic, that my own comments and position apply only to a logic-only context.
In a broader context, argument, reason, and logic — the words,
and the things they describe — are used in lots of ways, all of which are totally OK. There's a lot more to life than logic. ... And yet in a philosophy forum, where we regularly attempt
serious and considered thought, perhaps just a little formality, and just a little respect for the more formal meanings that "logic" and "reason" carry with them, is justified?
Good_Egg wrote: ↑October 3rd, 2023, 7:56 am
I think that it is meaningful to say that one event is more likely to occur than another, even in situations where there is no rigorous basis for assigning numerical probabilities. For example, someone who has studied or worked with widgets is more likely to be right about widgets than someone who has done neither.
And thus it is meaningful to talk of some Maybes being more or less likely than others.
That's one point where it seems to me that maybe you're over-simplifying.
In many cases, you are quite right. But the discussions you refer to were considering Maybes which come
without any evidence at all. Lacking evidence, it is not reasonable to claim likelihoods or probabilities, because the lack of evidence gives us nothing with which to calculate or estimate likelihood. We guess anyway, because that's one of the things that humans do, but we have no logical or reasonable basis for our guesses.
The only sense I can see, where this is "meaningful", is that it tells you how likely I guess the thing to be, even though I have no idea (and we both know that). That is not a *huge* amount of meaning...
Good_Egg wrote: ↑October 3rd, 2023, 7:56 am
The other part is that we often make decisions on incomplete information. And such a decision might be to act as if a proposition is true, or as if it is false, even though it's a Maybe.
Such a decision is neither logical nor illogical;
Such a decision is reasonable, and rational too (using everyday parlance and meaning for those terms), in the context of real life in the real world. It is not "logical", because there is no argument involved, but only assertion. Logic would require premises that, taken together, lead to the conclusion. Because there is no argument, as such, there can be no logic. So "illogical" or "alogical" they might be, but never "logical".
Good_Egg wrote: ↑October 3rd, 2023, 7:56 am
it does not represent a "problem with logic". It is reasonable, or not, depending on the likelihood of the Maybe involved and the consequences of being wrong.
See above for 'likelihoods'. There never really was a "problem with logic", as my topic title claims. The problem is with the way we use and apply logic, or fail to.
The problem is that we will only accept things if there is good reason, but some of us are prepared to reject some ideas arbitrarily, by assertion, without justification.
Why one and not the other? —
this is the core question that I created this topic to ask.