"Subject A traveled from a house (maybe not his house, you see, it's de-identified!) went to the library, selected a book on depression and another on cognitive behavorial therapy, read two chapters in the book on depression, made notes about 4 chapters from the CBT book, went back and re-read one chapter from the first book. Subject took quiz from first book which indicated a severity of 22 on the PHQ-9 depression score (it's not PHI because maybe he made up all the answers!) Subject appeared to move slowly with a sad affect through the library and while reading. Subject appeared to be interested in the 2nd chapter of the first book. Subject's other interests include 2000s romantic comedies and RPG video games. Subject's income is approximately 60k/yr and lives in a household with size 1."