Frank: Why? You keep making unsupported claims like this. I keep asking you to support them with mathematics or other argument/evidence, but you seem incapable of presenting any. One last chance, Frank, then I give up on you. This seems nonsensical. What are y and z and A and v? Explain. It's not obvious to me. Explain why it cannot do that. It's ok. I'm comfortable with maths. You can make a detailed mathematical argument if you like. Since neither you nor I have the ultimate understanding of physics, neither of us is in a position to agree or disagree with this claim of yours. How? Explain. How so? How is this evident? Explain the evidence for me. Does it? What is required for vision? This doesn't seem to be true in my dreams. What is this middle distance you are referring to? Explain. And how can something be both invisible and visible at the same time? I asked you last time when you planned to start teaching me. Will you start with your next post, please. I can't keep waiting for you to begin forever. You can start by answering my questions, so I can learn from you. Is this a mystery I'm supposed to solve on my own, or will you teach me your ideas? If I have to do all the work, then I don't think I'll need you any more. What is this if not a response? I've given you a few posts worth of my time. You're beginning to bore me with your lack of response. I'll give you one more post to start explaining. If nothing is forthcoming, then I'm done with you. How is my credibility on the line? I have made no claims. All I have done is asked you questions. It seems to me that it is your credibility that is very much on the line here. I'm so glad you're finally willing to help me. Please answer my questions in your next post so I can start learning. I'll even thank you in anticipation. Please don't disappoint me, O Teacher. Are we playing chess? Please explain. This is already published - right here on sciforums. By the way, I own the copyright to my posts here. I do NOT give you permission to republish my words on any other site on the internet or to copy them in any correspondence or other writings of yours published elsewhere. If I find that you have done this, you will be in breach of copyright and subject to potential legal action. Just so you know. If I find an error, I'll ask about it after your explanations in your following post.