I was very fortunately that my skill level followed the complexity of problems, only several years into my career I had to deal with systems level complexity and scaling issues, working as a high level web developer. Some things are just magic for a beginner. As a manager you should make people feel confortable, and some people do not have the mindset for constant self improvement. And some people you need to protect or they would over-work themselves. The trick is to have a load/capacity balance. Take games for example you usually progress the difficulty, you do not start with the end boss, or most players would quit, and those that pass would find the rest of the game boring.