An instructor should impact the student's life in a positive way. It's not about the specific lecture or content. It's how the learning happens and how the student absorbs the content. The same class can be taught by 2 different instructors and a student may learn really well from an instructor and simply reject the other one. The instructor has to be creative and, in many situations, think "outside the box". Real-life examples, breaking down content into smaller portions in a creative way are things that instructors can bring to the classroom and transform the way students learn.
