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    Reward Loops Entry #0601

    Why pull-to-refresh works the same way a slot machine does

    You drag the feed down and let go, and sometimes there is something new and sometimes there is not. The gap between the two is the whole point.

    Novice
    The hidden part #0601

    A timer would tell you the same news. The pull survives because it sells the pause before the news, not the news.

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    Achievement Architecture Entry #0707

    Why one unlock reveals three you did not know existed

    Revealing new achievements upon completion of one ensures the user never hits a motivational vacuum — every finish line immediately becomes the next starting line.

    Novice
    The hidden part #0707

    Each unlock reveals a new horizon. The player thinks the game keeps expanding; in truth, it was always this large — the curtain just moves.

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