Alas, yes. Here we go again. But here's the thing. We can break this ugly cycle, especially if we move in the direction of showing our work. I'm a retired scientist. Love the geeky stuff and never met a piece of lab equipment I didn't drool over. But, please, you have to admit that fancy labs for simple emulsions is more about G.A.S. (as often as not itself a procrastination tool) than quality. And isn't this forum about home-brew emulsions? And art?
Back to the suggestion we show work. A print or negative in hand is not a "just because" explanation. It is a physical object. That object is likely the reason most people here would want to make their own emulsions.
Some people will be interested in the physics and chemistry of the object. Others will just want to create. Some of us crave both. It's all good. You don't have to understand the Krebs cycle in yeast to bake a wonderful loaf of bread, although I think understanding that the yeast is there so that you get a loaf and not a tortilla is a handy thing to understand. I hope that seems a reasonable analogy to emulsion making.
One more thing: If we say we can't talk about things that have already been talked about here, then we might as well turn off the lights and lock the door .