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Is this lesson missing a functional requirement?

The functional requirements list being able to see others tweets on a timeline for all people a user follows, however later in the course it seems to add a functional requirement that was not previously discussed. “visits five other people’s pages. On each page if a user sees 20 tweets,”

Nowhere can I see that we discuss being able to view other people’s pages as a requirement. Seems like a miss in the functional requirement gathering? Or an assumption made by the author that was glossed over?

Also,
tweet_location, user_location

from the API seems to come out of nowhere. Functional or extended requirements do not mention any sort of geotagging etc.