It opens slowly. The diagrams look childish now. The mnemonics seem silly. But then you see the footnote on the last page, written in the smallest possible font, a private message from the student who made the notes to their future self:

You close the PDF. You don't need it anymore. But you will never delete it. Because Anatomy_First_Year_Notes_FINAL_v3.pdf is not a study guide. It is a tombstone for the person you used to be—the terrified, brilliant, sleep-deprived kid who believed that if they could just name every nerve in the arm, they would finally be a real doctor.

One day, during a slow night shift, you open your old hard drive. You find the folder: Med School/Year 1/Anatomy/ . You double-click the PDF.