It depends on the instructor. I'm working through a Quantum Course by Prof. Binney at Oxford. His moment to moment teaching is not great, but he'll intermittent

It depends on the instructor. I'm working through a Quantum Course by Prof. Binney at Oxford. His moment to moment teaching is not great, but he'll intermittently and regularly just drop gold nuggets. It's those "aha" moments where someone with a deep knowledge of the material clears up some misconception I've had for decades with a few sentences, or an off the cuff remark.