It comes down to selection and attention as evidence of beliefs/values. The very fact that someone expends energy on an argument (pro or con) is pretty solid evidence that they care about the topic. They may also care (or even more strongly care) about validity of arguments, but even the most Spock-like rationalists are more likely to point out flaws in arguments when they are interested in the domain.
But I’m confused at your initial example—if the argument is A → B → C, and A is true and C is false, then EITHER A->B is false, or B->C is false. Either way, A->B->C is false.
But I’m confused at your initial example—if the argument is A → B → C, and A is true and C is false, then EITHER A->B is false, or B->C is false. Either way, A->B->C is false.
A → B → C is false, but A → B (which is a step in the argument) could be correct—that’s all I meant. I guess that was an unnecessarily complicated example. You could just say A and B are false but A → B is true.
It comes down to selection and attention as evidence of beliefs/values. The very fact that someone expends energy on an argument (pro or con) is pretty solid evidence that they care about the topic. They may also care (or even more strongly care) about validity of arguments, but even the most Spock-like rationalists are more likely to point out flaws in arguments when they are interested in the domain.
But I’m confused at your initial example—if the argument is A → B → C, and A is true and C is false, then EITHER A->B is false, or B->C is false. Either way, A->B->C is false.
A → B → C is false, but A → B (which is a step in the argument) could be correct—that’s all I meant. I guess that was an unnecessarily complicated example. You could just say A and B are false but A → B is true.