Effects of controls is the first lesson.
Yeah, right. And you show the effects of controls by teaching the student to use a reference point in the cockpit and the natural horizon...don't you? And have you ever tried to do that with a complete beginner with no horizon because you're peering through haze or light rain? They can't do it. They need crystal clear days to start with; then later on they can learn to do it in worse weather. It's called not trying to run before you can walk.