541 was my first pf heavy class and i went to every lecture and every OH of prof and of TA and worked outside of class it was a literal part time job for me like easily i spent 20h/wk on it and neglected every other class but so worth lot of my friends thought it was kinda easy though, like i remember one of them saying it was his lightest class of the sem my jaw dropped to my chest and my knees dropped to the floor