"backtotalk - you are getting yourself tied up in knots"
Not at all -- ask any theologist or logician.
"I'm fed up with the hectoring, pugilistic tone."
At last you seem to be learning an important lesson It is not pleasant to be patronised, I think we agree on this? It is not nice at all to be talked to and about with arrogance, and as if one is a brainless idiot? We don't really like it, do we?
Shall we try remember this in future in this kind of debate? Some people never learn this kind of thing until it happens to them and they are forced to complain about it. I think you're one of them. Now, having de-activated my brain to show you these very simple proofs, which despite their beauty and simplicity you still don't understand, I will try once more and then move on.
You said it is impossible to prove that God does not exist. I have proved to you that this is not so. You have to accept this because you accept the premise that a logical impossibility cannot exist.
Once again your failure to understand this has led to your use of abusive language, even though you don't enjoy having such tones used against you. You do rather want it all one way. I really don't like that. Unfortunately the abuse and offensive tones on these threads usually are only one-sided, because the Christians here are so nice. But I'm not a very good Christian and fully expect to be spit-barbecued come the four Horsemen. So I'm quite happy to show you what it's like.
Basically, you don't get it. Someone earlier said of SGB: "Of course you have a valid point: you just don't have the intellect to validate it." I'd like to steal that and pass it in your direction.