Dirk Van de moortel wrote:

[snip]

> As others have said, it is a question of defining things. In the part
> of the world in which I live, Bourbaki is the standard. So my
> statement that "zero is usually taken to be both positive and
> negative" is correct - again, in the part of the world in which I
> happen to live.
>
[snip more crap]

Idiot imbecile. Next thing you tell us is that you met Bourbaki and he
taught you personally this garbage. 

Mike

DVdm: Note to reader:
    http://www.mcs.csuhayward.edu/~malek/Mathlinks/Bourbaki.html