If the innate ability to learn is there (which in most human beings, is) and the desire to learn, adapt, and learn some more is there, then a student should not be discouraged, I believe.
Learning curves and styles are different for everyone....with some people, they learn one idea at a time, sequentially and are meticulous, which requires months of patience by the teacher until all the ideas are learned; others, can learn multi-tasking easily but get overconfident and aren't meticulous, which requires rework by the teacher. Finally, throw in the personality of the teacher with the student, and the student with the teacher, emotions of getting up in the air and then landing the machine, and there can be some significant human factors to overcome.
I think if communication is not straightforward and honest, a student can instinctively pick up on when a teacher is not being honest with them, or dissatisfied. Then the learning stops and a wall is built up between them. The student is self-conscious and that causes additional stress or a complete shutdown of learning.
Progress always needs to be discussed, honestly, and openly but without exasperation on the side of the teacher.
And yes, if you are teaching and consider someone "****eforbrains" maybe you aren't the best person to be instructing with that attitude towards a human being.
