[sonusario]

> Just to avoid that confusion: "certain" is not the same as "so incredibly sure that it would be world-shattering to discover otherwise", even though the former often is used colloquially to mean the latter. I'm pretty sure that that is some equivocation that's going on here.

I don't mean "so incredibly sure that it would be world-shattering to discover otherwise" when I say certain. I mean "Known for sure; established beyond doubt".

> So, you are saying that there is a claim that you are absolutely certain about?

Yes. I've already said so. Consider re-reading my previous comment in light of my response "to avoid that confusion".

> There is nothing in not being absolutely certain about anything that prevents you from still coming to conclusions and acting on them, and in many cases at least locally successfully so.

Agreed. Those conclusions have less basis, but our knowledge can wind up aligned with the truth without us being certain.

> There is nothing in reality, as far as I am aware, that guarantees that you can be certain about anything.

Then we are done with our conversation. If you can't be certain of anything, then all of logic is suspect.

This flies in the face of a comment you've made previously in two ways, both regarding logic and your awareness: "Which you can't [with your senses, demonstrate that the claim "our senses have at least one way in which they are reliable" is false] because it's a logical contradiction to show that a tautological claim is false."

[zAy0LfpBZLC8mAC]

> I mean "Known for sure; established beyond doubt".

OK!

> Yes. I've already said so. Consider re-reading my previous comment in light of my response "to avoid that confusion".

Well, possibly you have, just trying to avoid confusion.

Could you give one example of such a claim? (Yes, I understand you might already have mentioned one, I just want to be sure I am not misrepresenting you.)

> Agreed. Those conclusions have less basis, but our knowledge can wind up aligned with the truth without us being certain.

Exactly! But note: "less basis" does not mean "no basis". Also, just asserting certainty doesn't give you any more basis, only actually having justified certainty does. The fact that you might prefer absolute certainty for the basis of (some of) your beliefs does not mean it's something you can actually have.

> Then we are done with our conversation. If you can't be certain of anything, then all of logic is suspect.

Well, yes, of course it is!? Are you saying that you have never made what you now consider errors in your logical thinking, where you were convinced that you came to a conclusion through correct logical reasoning and later came to the conclusion that you were wrong about that?! And if that has happened to you (I mean, it happened in this thread, so I assume you will agree that it has happened to you?), then how would you distinguish logical conclusions or methods of logical reasoning that you are certain are correct from those that you currently are mistakenly convinced are correct? And if you you can't distinguish those, how would not all of logic be suspect, at least just enough to not justify labeling it as absolutely certain?

And maybe more importantly: How is that relevant to our conversation? Either we agree on some claim or argument or we don't, how does it make any difference whether either one of us is certain about it?!

> This flies in the face of a comment you've made previously in two ways, both regarding logic and your awareness:

I don't see how, could you explain?

[sonusario]

> Could you give one example of such a claim?

It is certain that you can't be certain of the claim "there is no thing anyone could possibly be certain about". You can't be certain "there is no thing anyone could possibly be certain about" without contradicting that claim, thus it is not possible to truthfully assert that claim in any way. Where there are no other possibilities, you have certainty.

> Also, just asserting certainty doesn't give you any more basis, only actually having justified certainty does.

Agreed. If you lack certainty about that though, then you think that there is a chance, however small, that just asserting certainty does give you more basis.

> The fact that you might prefer absolute certainty for the basis of (some of) your beliefs does not mean it's something you can actually have.

It ought to be sought out where possible, because it can actually be had. Also, if you lack certainty about that, then you think that there is a chance, however small, that the fact one might prefer absolute certainty for the basis of (some of) their beliefs does mean it's something they can actually have.

> How would you distinguish logical conclusions or methods of logical reasoning that you are certain are correct from those that you currently are mistakenly convinced are correct?

By distinguishing what possibilities have/haven't been ruled out.

> How is that relevant to our conversation?

Not knowing of any reason to think anything could be known with certainty is a non-starter for most conversation. Resisting all reasons to think anything could be known with certainty is a non-starter for any conversation.

> I don't see how, could you explain?

Your statement "There is nothing in reality, as far as I am aware, that guarantees that you can be certain about anything", expresses a lack of certainty in all claims, which includes tautological claims and claims of awareness, "awareness" being comparable to "senses".

If you lack certainty regarding tautological claims, then you think there is a chance, however small, that tautological claims could be shown to be false. You are open to the idea, however unlikely you take it to be, of logical contradictions being true, and thus are open, even if only a little, to asserting the illogical.

If you lack certainty regarding your awareness, then you think that there is a chance, however small, that there are things in reality, as far as you are aware, that guarantees that one can be certain about something.