I am a math student and never take notes in class. I feel like I am offending the professors by not taking notes. In general, do professors like students to be "active" during class? I have never learned much by taking notes.
I see other graduate students furiously taking notes...and then I am afraid that professors may write that I am lazy in recommendation letters. So maybe I should just takes notes?
One of my professors forbid to take notes during the lecture, unless it helps you learn and memorize during the lecture. The slides were available online.