I'm reminded of a time when my sister in law was upset with her daughter. The girl was supposed to have cleaned her bathroom but hadn't swept the floor. To make peace, I offered to help her finish the task. What I learned is that she actually didn't know how to sweep a floor (she was maybe 5 or 6 years old). I helped her and both of us felt like we'd learned something.

She learned to sweep a floor, and I learned that often, when kids aren't meeting your expectations it because they honestly don't understand how to do it. I didn't have a child for a long time after this, but I think of this vignette often.

Even at work with junior colleagues, often they have no earthly idea what the expectations are or how to fulfill them. They need to be taught and just expressing your disapproval isn't going to help.