Good lectures in the humanities are partly there to tell you why you know what you know and expand on that and reinforce it with a good structure built from kno

Good lectures in the humanities are partly there to tell you why you know what you know and expand on that and reinforce it with a good structure built from knowledge. That doesn't require masochism or a sense of conscious pain to gain a benefit. Using pain as a single measure of learning is missing the mark. But yeah learning will always cost something, even if it's just time.