What are you talking about? Proof has nothing to do with it. My sister always thinks she knows the solution to any problem I have. The fact that she doesn’t know all the facts, knows significantly less details than I do, or contradicts the advice of professionals is not relevant.
So when she sent me a link to a Youtube video that is clearly a woman giving a lecture, I strongly suspected it was more worthless advice. I asked what the video was about and I should watch it. Rather than tell me what the video was about or giving any reason I should watch it, she replied “Just watch it”. If there was anything she could have said to actually make me want to wacth the video, she would have said it. So, she confirmed that the video was not something I would want to watch but something she thought I should watch. Having no reason to watch the video and not wanting to start another argument, I didn’t click the link or reply.