> Would it kill you to say, just once, "Maybe I was mistaken"? Your ego can't possibly be this big.
>
>You're injecting a completely irrelevant and non-technical comment in response to a legitimate question (that wasn't even addressed to you).
>
>So beyond that, I won't even dignify this with a reply.

You advocated using a non-zero, non-null value as a foreign key. I asked you to defend that. If you don't want to, or can't, that's up to you. I am happy to let it go, probably better that way.