>I think that #1 and #4 are the standard senses in philosophical or
>other technical contexts, though the others are in common
>use. #2 and #3 are, IMHO, too vague for use in careful thinking.
You are welcome to your opinion of course, but you should realize that
you've just said that the principles of logic are too vague for
use in careful thinking. If that's right I think we'll just have to
agree to disagree on that point.
-- David McFadzean david@lucifer.com Memetic Engineer http://www.lucifer.com/~david/ Church of Virus http://www.lucifer.com/virus/