EatThisShoe t1_jdxgzzj wrote
Reply to comment by Xavion251 in Scientism Schmientism! Why There Are No Other Ways of Knowing Apart from Science (Broadly Construed) by CartesianClosedCat
Ok, I think that's a pretty reasonable definition. Working with that definition we could claim, for example, that logical deduction is not science because it doesn't actually test the conclusion as a hypothesis.
Tying this back into the original question, I would say that I would question whether logical deduction without testing against reality actually produces knowledge. A logical conclusion is true only if the premises are true, if we later tested that conclusion against reality we might find that it is false.
Xavion251 t1_jdy35dv wrote
Testing it is a way to confirm it, but ultimately not fundamentally necessary. Every logical deduction that turns out to be false will be falsd because there was some error in the logic (either a false premise or a conclusion that doesn't follow).
That means that a (obviously purely hypothetical) person who is 100% perfect at understanding and applying logic could always deduce the truth with perfect accuracy - without testing anything.
While the above hypothetical example is of course impossible - it's simply taking what is to an extreme. Showing that logic does and must work regardless of whether science is involved.
Science is a good thing, it works very well - especially at obtaining knowledge that leads to technology. But that doesn't mean it's the be-all-end-all.
It's possible to be too "pro" a good thing and too "anti" a bad thing.
EatThisShoe t1_jdybnc3 wrote
> That means that a (obviously purely hypothetical) person who is 100% perfect at understanding and applying logic could always deduce the truth with perfect accuracy - without testing anything.
This I cannot agree with. First you are assuming an infinite regress of provable premises, which you cannot logically prove to be true. Even the claim that all logical statements are true is not something that is proven, it is assumed to be true because it has not be demonstrated to be wrong.
The fact that even you admit this scenario is impossible is the exact problem. You cannot derive knowledge via an impossible process.
Xavion251 t1_jdzazg1 wrote
>The fact that even you admit this scenario is impossible is the exact problem. You cannot derive knowledge via an impossible process.
Taking real things to a hypothetical (but practically impossible) extreme is actually a very good way to logically work through something.
>Even the claim that all logical statements are true is not something that is proven, it is assumed to be true because it has not be demonstrated to be wrong.
It is impossible to understand anything (including science) if logic does not work. So we can't really even have a discussion on whether or not logic works, all conversation necessarily assumes that logic works.
>First you are assuming an infinite regress of provable premises,
No I don't. Eventually all premises boil down to direct, shared experiences that everyone (or almost everyone) can agree on. So does science. So does everything, really.
EatThisShoe t1_je41hjz wrote
> It is impossible to understand anything (including science) if logic does not work. So we can't really even have a discussion on whether or not logic works, all conversation necessarily assumes that logic works.
I didn't say logic doesn't work. I said that every logical conclusion is based on premises, and those premises are things that people take for granted, not things that are proven true with logic.
> No I don't. Eventually all premises boil down to direct, shared experiences that everyone (or almost everyone) can agree on. So does science. So does everything, really.
Experiences are subjective, even if you and I agree on something that does not mean it is true. And it is absolutely not the same as logically proving that it is true.
Logic can't get you out of the infinite regress. You appeal to a shared experience, which is not a logical argument. And even shared experience can be wrong. We have plenty of evidence that demonstrates how people's perception does not match reality. So how can you claim that a logical conclusion, that has not been shown to match reality is knowledge?
It fundamentally comes down to this: If your belief, or your logical conclusion, or our shared experience does not match reality, then which is correct?
Xavion251 t1_je526zc wrote
>It fundamentally comes down to this: If your belief, or your logical conclusion, or our shared experience does not match reality, then which is correct?
How would you know if those things don't match reality? You can't observe reality independently of these methods (experience, belief, logical conclusion, science, etc.).
>Experiences are subjective, even if you and I agree on something that does not mean it is true. And it is absolutely not the same as logically proving that it is true.
Fundamentally, experience is all we have. Even in science, everything boils down to an experience. You experience the data and the experimentation through your senses. Experience is inescapable, it is all we have, all we are.
> I said that every logical conclusion is based on premises, and those premises are things that people take for granted, not things that are proven true with logic.
All premises eventually go back to experiences we can all agree on. Even things as basic as "the world exists", "humans exist", etc. You can't transcend/escape that, even with science.
You can't leave your own subjective experience, that's ultimately the only way anyone can know anything. You wouldn't be able to know science works at all if you didn't experience it working.
EatThisShoe t1_je5lihe wrote
> How would you know if those things don't match reality? You can't observe reality independently of these methods (experience, belief, logical conclusion, science, etc.).
We don't do it independently of our experiences. We do it by having new experiences. Our experiences are not truth, they can be inconsistent.
> All premises eventually go back to experiences we can all agree on. Even things as basic as "the world exists", "humans exist", etc. You can't transcend/escape that, even with science.
I think we're in a greement here. The issue is that you said this:
> a (obviously purely hypothetical) person who is 100% perfect at understanding and applying logic could always deduce the truth with perfect accuracy - without testing anything.
That doesn't follow unless you assume that your experiences are always true, and that any logical conclusion drawn from your experience then must be true.
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