Disagreement is not the problem, since we could still rationally explore the extent of our disagreements. And for that you still would need rationally compelling arguments which are possible only thanks to a shared set of epistemic rules and shared ways to apply them. Rebutting to your opponent’s objections by expressing a disagreement without providing rationally compelling arguments amounts to withdrawing from a rational confrontation. That’s all. — neomac
The disagreement is
about what is rational. It's about whether I have or have not stuck to those rules you mention. It's about whether I have or have not provided those 'rationally compelling arguments'. How do we resolve
that disagreement? More 'rationally compelling arguments', about which you and I will inevitably disagree over whether they are such?
you have to provide pertinent rationally challenging arguments yourself. — neomac
This just begs the question. The question is whether I have actually provided rational arguments (you disagree) and you're claiming that to make my case (that I
have provided rational arguments) I must provide rational arguments to that effect. If we agreed on what constitutes 'rational arguments' then there would be no question to answer in the first place.
I would exactly do all I did, so what is the point of claiming that my judgements are completely subjective as yours or anybody else’s? We would still be in condition to possibly convince others based on rational compelling arguments! Claiming that all my claims or judgements are completely subjective is devoid of any cognitive meaning. — neomac
Not at all. As I've expressed here several times, there is a substantial difference between rejecting an argument that has overwhelming evidence to the contrary and accepting an argument which doesn't. The important distinction is that one is compelled to do the former (if one wants to remain rational), but one is not compelled to do the latter (many such arguments exist - underdetermination). Hence the focus is erroneously on which arguments must be ruled out by overwhelming evidence to the contrary, rather than on the reasons for choosing among those which remain.
Most of us are intelligent enough to have already discarded theories which are overwhelmed by evidence to the contrary, those of us that are not can simply defer to experts (who are). Thus it's very unlikely that any theory being seriously discussed is overwhelmed by evidence to the contrary, and us such none of us are compelled by the 'rules of rational thought' to discard it.
What remains are the range of theories which are not overwhelmed by evidence to the contrary - the plausible theories. From among these, however, rationality is useless as a method of choosing. all rationality can tell us is that the theory is plausible (which we already knew by its inclusion in this set). There's no evidence that can be brought (all theories in this set have supporting evidence), there's no logic that can be used (all theories in this set are logically valid). So the arguments persuading people to adopt one theory over another are not rational ones, they are emotional ones, social ones, ethical ones...
When you fail to calculate an arithmetic sum, I can show you how to calculate it correctly by actually calculating that sum as everybody learnt to effectively calculate it. When you fail to process a modus tollens, I can show you how to process it correctly by actually processing the modus tollens as everybody learnt to effectively apply it. — neomac
Exactly. Notice the two uses of 'everybody' there? Notice the complete absence of any reference to 'everybody' in your claims?
You cannot demonstrate that I have summed 2 and 2 incorrectly by simply saying that I have. The only way you can do so is by reference to 'everybody else' - some maths professor, a few students, day-to-day life... the argument is "that's not the way
we do it", but to sustain that argument there must be a 'we', your word is not sufficient. If you think I've failed to process a modus tollens correctly, but I think I haven't, we have nothing more to appeal to that "that's not the way
we do it", but for any argument much more complex than 2+2=4, you will fined different people do it different ways, so where does that leave your recourse to such a claim?