Re: A question on logically sound arguments

"Derek" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> In a discussion with an ex-archive poster in aaev, a
> question on logic has arisen which I hope someone
> may be able to comment on.
>
> During this discussion I described a logically sound
> argument as thus;
> "A logically sound argument needs neither true
>  premises nor a true conclusion. It only requires
>  that if the conclusion is false, then at least one of
>  the premises must be false too."
>
> Is this a correct description?
>
No, not under standard pedagogical usage.  What you describe is a VALID
argument.  A SOUND argument is a valid argument with true premises.

Bill Snyder