Am I getting through to you now???
I understood what you were saying in the first post. I disagreed. There's a difference between not understanding, and disagreeing - just as there's a significant difference in correction as you were assuming it always applied, and how I pointed out it often might apply from the dog's point of view. Just as they don't see "right" or "wrong" in what they do, they also don't see "natural" and "unnatural" in what we ask them to do, the changes we ask them to make to their behavior.
The natural thing for Ted to do is go out, run the sheep down until they are tired, corner them, and start picking off the weak ones for breakfast. The natural thing for Min to do is to widen her patrol out to everything she can hear and smell, which is about a two mile radius in some directions.
What you seem to be saying is that somehow Ted and Min are experiencing minor trauma because I have to modify their natural behavior to suit my needs. Ted can't have my sheep for breakfast, no matter how natural it is, and I can't even let him try - I have to stop it every time it goes down that road. That takes a correction. I'm modifying the direction his action is taking.
Just like a correction on a ship, the less time you allow the dog to be "off course," the easier it is to get the dog back on course. I might be able to simply show him the right way to do something, if I notice he's floundering a bit, rather than having to block, chase, shout, etc. later on if he actually gets into situations where he's chasing and biting.
Min's supposed to stay in the fence. She didn't understand that when I first got her. When I let her of, she dragged a long line, and if I caught her going over the fence, I went out, caught her, and kenneled her. Ie, I took her from her job. She let that happen to her about half a dozen times and now she stays in the fence.
I don't think "natural" versus "unnatural" - I think difficult versus less difficult all the time and carefully consider that while training. I don't logically try to think it through - I assume if I get a refusal, it's because the dog is having trouble with what I ask - there's something hard about it and we have to go back a step to where it's easy again.
Yesterday someone cam and looked at a foster and she was wavering on whether she wanted to try her. Jetta was unusually nervous with the new person, who had brought a new dog also, plus the people next door were having a get together and were cooking food, lots of little kids running around (she loves kids), PLUS the kids from the neighbor on the other side were staying over. In spite of everything she acted like a champ - she just wasn't as enthusiastic as usual - I showed her agility stuff, her flyball stuff, her little tricks and she kept wandering around and acting "meh" and stressy.
If it were just me and Jetta I'd have given the whole thing a pass and worked on something super simple but the person had driven two hours to see her and it was pretty much now or never.
So I was walking to the car with the person and she was talking sort of maybe-maybe-not - I had laid my bag of roast chicken and beef where I thought Jetta couldn't get into it, on the inside of the open trailer. Not only was it off the ground quite a ways, but there was also a little box of steel and wire to hold mulch and whatnot. While we were talking, right in front of our eyes but almost too quick to see, Jetta levitated into and through all the obstacles, snagged the bag of treats, and zipped back out of the trailer. In another microsecond she was about 100 feet away across the yard.
Instead of screaming and chasing her, I laughed and grinned at the visitor. "Okay, let's see what Jetta remembers. She's only had this lesson ONCE - THIS MORNING." Jetta had just come in for a landing and was starting to shake the bag open. I said, not mean, just firmly, "Jetta drop!" (remember too I was all the way across the yard)
She did! I started telling her what a good girl she was and she waited by the bag for me to run there and give her a piece. Lots of pieces. BIG pieces. 
My visitor immediately started talking about when might be a good time for her to give her a try. See, the whole time the one thing that had really impressed her was how extremely food oriented Jetta was. That's a natural thing. But, in her time here, I've taught Jetta to value something else - being a team player.
Sure, you can say it was an OC thing - the "lesson" that morning was actually when she stole my Arby's roast beef sandwich and I asked her to "drop" when she was extremely close to me. She figured since I was asking her to do SOMETHING that she'd be getting a treat anyway so she dropped what she had in hopes that something better was coming. She was right, of course - she'd only tasted the bread from the sandwich and I gave her a big chunk of meat after I picked it up.
But when Jetta first came, she had no concept that people did anything other than keep her from doing stuff, hurt her (probably), and sometimes inexplicably petted and loved on her. That's a natural state. What I hope to do with dogs who come here is give them an additional level for understanding what we want, another tool besides observation/experience and reaction.