A good lecture is a good lecture but that is subjective because it depends on the level of knowledge each listener has. Whereas if I am reading I can easily ski

A good lecture is a good lecture but that is subjective because it depends on the level of knowledge each listener has. Whereas if I am reading I can easily skip the parts that seem too elementary to me, and read many times the paragraphs that seem difficult. A live lecture is better than video lecture because you can ask questions.