Originally posted by Agerg
The thread was here:
http://www.redhotpawn.com/board/showthread.php?threadid=127783&page=&page=13
Though my phrasing of the scenario is slightly embarrasing looking back, the part of his response to which I refer was:
Alas how it pangs me!!, the situation you give to support your hypothesis is of itself entirely hypothetical in itself, and thus, i am ng my original premise, not assumptive but firmly grounded with in the realms of truth.
robbie carrobie
do you comprehend the concept of showing a piece of logic to be invalid by applying it to the hypothetical?
For example, if you said this piece of flawed logic:
1, “if blue whales are bigger than any known extinct dinosaur then there is no animal bigger than a blue whale”
the premise is correct (blue whales ARE bigger than any known extinct dinosaur) and the conclusion is correct (there IS no animal bigger than a blue whale) but the logic is invalid because the conclusion doesn't follow from its premise.
One way to show that piece of logic to be invalid is by applying it to the hypothetical scenario of elephants being bigger than blue whales:
IF elephants ARE bigger than blue whales then that fact would contradict the conclusion of argument 1, without contradicting its premise thus that hypothetical scenario PROVES that the logic of argument 1, is invalid.
And you cannot say “but elephants ARE NOT bigger than blue whales and so this is irrelevant...”
because that is evading the point which is, the mere fact that considering the hypothetical would demonstrate the logic to be invalid -would you deny this? Would you concede that this is an example of the usefulness of considering the hypothetical?
That would be just one example of the many kinds of ways considering the hypothetical is useful and relevant.