I believe your teacher. People take courses because such courses are mandatory or for credits. Unintended consequence is learning. Even if your goal is to maste

I believe your teacher. People take courses because such courses are mandatory or for credits. Unintended consequence is learning. Even if your goal is to master, you have to scratch the surface first time. Later, you can go back and establish new connections between problems and topics, and see the history behind these problems. Then you will know the depth of ignorance (or things one doesn't have knowledge of).