“What is the difference between a good question and a bad question?”
It depends on who is answering. Usually it’s a “bad question” when someone can’t answer it without calling it a bad question first.
When I call something a bad question, I sometimes try to rewrite it a few different ways, or substitute other words and answer a question that I *can* answer. Or if I’m really stuck, I’ll ask it to be rephrased.
It’s a “good question” when they *can* answer it – or it makes them pause and they take a moment to think and reflect.