Thanks, @spikeyxxx, for the links 😀! You’ve pointed exactly to a problem that I’ve encountered so often: the confusing explanations. I have two videos on my “To-watch-list”:
But I haven’t done it yet, maybe also due to bad experiences with cryptic explanations from people who are surely very intelligent but for some reasons aren’t able to explain it well to non-mathematicians. And believe me, I don’t give up quickly. It’s just that these people don’t give proper definitions of the terms they’re using. And that’s when I stop the video.