A thread at UD that was just beginning to get interesting was unfortunately cut short when Elizabeth departed.
As is oh so typical over at UD, those silly IDiots were appealing to obvious truths and the primacy of logical reasoning. Elizabeth, in contrast, was championing her empirical methodology.
During the exchange, Elizabeth made the following statements:
My method is the standard empirical method.
If you can’t establish the truth of the premises how can you know your conclusion is correct, however impeccable the logic?
My question to Elizabeth was simple. How did you arrive at the truth of that statement [assuming it’s a rhetorical question] using the standard empirical method?
I’d really like to give Elizabeth an opportunity to answer.
A deductive argument is said to be valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. Otherwise, a deductive argument is said to be invalid.
A deductive argument is sound if and only if it is both valid, and all of its premises are actually true. Otherwise, a deductive argument is unsound.
Given the above explication of valid and invalid arguments and sound and unsound arguments, does Elizabeth’s question even make sense? IOW, logic does not and cannot tell us whether the conclusion is “correct.” Logic can only tell us whether an argument is valid. Logic cannot and does not tell us whether an argument is sound.
How do we discover these facts/truths of logic using Elizabeth’s standard empirical method? If they cannot be established as facts/truths using the standard empirical method, should logic be abandoned? If so, why?