[munificent]

The key difference is that you could finish the newspaper.

Imagine how different Instagram would if after ten minutes of scrolling you reached a point where it said "That's it. No more photos until tomorrow!"

(You may remember that Facebook used to work that way with their chronological feed. As soon as you saw a familiar post, you knew you were done. There's a reason they killed that feature.)

[LynxInLA]

Isn't that what happens with Instagram? It says "you've caught up" on my phone when I reach photos I've already seen.