| You said: Actually it does [mean he's wrong] because it is upon that logical fallacy that the counter argument is entirely built upon Wrong is the wrong word :) What you're looking for is "invalid". An argument is valid if and only if the conclusion follows from the premises. In other words, if the premises are true then it cannot be the case that the conclusion is false. Since a logical fallacy adds nothing to an argument, the conclusion does not follow from the premise. Since the conclusion can therefore be false, even if the logical fallacy is true, the argument is labeled invalid. Just for completeness... A more strict standard is soundness. An argument is sound if and only if the argument is valid and the premises are true. If an argument is sound, then the conclusion is necessarily true. Obviously, the argument invoking a logical fallacy as its premise is unsound because it is invalid. It is also perfectly possible for the conclusion to be true even though the argument itself is invalid and unsound. If you still would like to apply the label "wrong" to it, then I'd say, "The argument is wrong, even though your conclusion happens to be true." (Note: I can't see the post that started all of this off as it has been deleted, so I'm not making any comment on the truthiness of his/her conclusion) |