Let us assume that walking on water is impossible. But it is possible if a miracle has happened. Hence, walking on water is possible.
This is incoherent, meaning that its parts don't cohere, don't fit or work together but rather, don't fit or contradict one another. You've violated the principle of noncontradiction by defining something as both impossible and possible at the same time. It can only be one of those.
Shortly: an impossible miracle is possible through a miracle. Did I prove miracles?
No. Remember, proving is a cooperative process involving a teacher offering a proof and a student understanding the proof and finding it compelling. Have you done that? If not, you have proved nothing.
Never say No without any logical explanation why you are saying No.
Agreed. My logical explanation for answering no to your question is because it is an accurate report that you proved nothing to me.
Only God can say No.
No again. Perhaps in your mind, but I don't share your beliefs or means of arriving at them. My map of reality contains no gods, certainly none that speak.
You are not sure; you have just suggested that No.
This is incorrect. I am absolutely sure that you have proven nothing to me.
It is trolling, my friend.
No again. Trolling is attempting to aggravate others.
Nobody is wrong until proven wrong; prove me wrong and then say No.
Correct on the first part. Nobody is known to be wrong until proven wrong. Nothing is impossible known to be until proven impossible. Nobody is known to be guilty until proven guilty.
Regarding the second part, there is no need to prove to you or anybody else that you are wrong about proving anything to me. Why don't you prove that you convinced me that you were correct but that I'm lying about it or that I knew but have now forgotten you proof, or some other reason why I deny it.
Nothing is a proof because you claim it is. It is a proof because it convinces prepared minds. This is analogous to claiming that a joke is funny when nobody laughs at it.