AmadeusD
Paine
From what I've seen the main argument in the last two pages has been that Banno thinks if there are things we don't currently know, then Antirealism can't hold. — AmadeusD
Metaphysician Undercover
Well... *sigh*. That is.. not reasonable. — AmadeusD
I like sushi
Ludwig V
Well, yes. But can an anti-realist know that there is more than one anti-realist? I think not, and that's why I think that the only consistent form of idealism is solipsism.If this isn’t the case, then there must be other things that are not seen, even by an anti-realist. Because there might be more than one anti-realist. — Punshhh
That seems entirely reasonable. I guess the problems must be in the fine print....... antirealism, which is the epistemic position that if something is true, then it is knowable. — Banno
But what is the force of "cannot"? Does it mean that we don't have the technology? Or does it mean that we have to develop a new approach (elliptical orbits instead of circular ones?There cannot be any unknown truths if every truth is knowable. — Banno
Well, I can see that perhaps we cannot know all truths. But it does not follow that there are any truths that we cannot know.If we are to hold that we do not know everything, then there are things we cannot know. — Banno
I think the distinctions between known unknowns and unkowns. lt seems to me that the former are not incompatible with anti-realism (or some forms of it). I may not know the tenth place in the expansion of pi (5), but I know that there's a method for finding it. But it also seems to me that the latter are. However, I don't see that anything prevents us from discovering at least some of them and developing new concepts in the process.If we do not know everything, then antirealism is not an option. — Banno
Perhaps not. I don't really think I'm capable of demonstrating that it is wrong. On the contrary, I think it is right, provided the context is right. IEP - Dynamic Epistemic Logic has a helpful summary of the argument:-That doesn't seem to me to be addressing Fitch, ..... — Banno
It is clearly true that I cannot know that p (is true) and that I do not know that p. In general, if the person who knows (K) is the same as the person who asserts the starting-point, it is self-contradictory (Moore's paradox). But it is not contradictory if the person asserting the starting-point is different from the person who knows. There's no problem about me asserting (knowing) that p is true and someone else does not know it. I'm not sure what impact, if any, this has on realism/anti-realism.From ∃p (p ∧ ¬Kp) follows the truth of its instance (p ∧ ¬Kp) → ◊ K(p ∧ ¬Kp), and from that and p ∧ ¬Kp follows ◊ K(p ∧ ¬Kp). Whatever the interpretation of ◊, it results in having to evaluate K(p ∧ ¬Kp). But this is inconsistent for knowledge and belief.
I agree with you that it is not obvious that known unknowns threaten antirealism. But unknown unknowns do. The catch is that we don't, and can't, know what they are. We only know that there are such things because we have encountered some of them before.From what I've seen the main argument in the last two pages has been that Banno thinks if there are things we don't currently know, then Antirealism can't hold. — AmadeusD
. l agree, though, that a move from "knowable" to "known" does seem to require tenses.It (sc. Fitch's paradox) begins with Up(p⊃◇Kp), which is not temporally dependent. — Banno
Corvus
I think that is all that is being said? — I like sushi
Corvus
I think that is all that is being said? — I like sushi
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