Infinite scroll removes the natural stopping cues from content consumption: instead of pages, editions, or a visible end, new content loads continuously so there is never a built-in moment to decide whether to continue. The design exploits a well-documented feature of human behavior — we rely on external cues to stop. Brian Wansink’s “bottomless bowl” experiments showed people eat substantially more soup from a bowl that secretly refills than from a normal one, because the empty bowl is the signal to stop and it never arrives. A feed that refills before you reach the end deletes that signal by the same logic, so consumption runs on momentum rather than choice.
Because there is no explicit “load more” or “next page,” the user never makes a decision to keep going; the next item simply appears, and continuing is the path of least resistance. Sprinkle in variable rewards — an occasional genuinely good post amid the filler — and the loop sustains itself: you keep scrolling partly for the chance of the next hit, partly because nothing ever tells you to stop. The harm is quiet: no single scroll is costly, but the aggregate is large blocks of time consumed without intent, which is precisely the design goal.
The tell is the missing brake. Honest tools that respect your time have natural endings — you finish the article, reach the bottom of the list, clear the inbox — and stopping is built in. A bottomless feed weakens the moment you impose an ending on it, because the endlessness was doing the work. Reintroducing stopping cues — timers, app limits, bounded formats, entering with a specific intent and leaving when it’s met — restores the decision the design took away.