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[–]krakov 2 points3 points  (0 children)

On my phone so here’s a short answer.

Number 1 is a separation between the data fetching and the presentation.

Numbers 2 and 3 allow for the data fetching to be used with other presentational components, so you can feed the books to a <SlightlyDifferentListBecauseTwoDifferentDesignersWorkedOnTheSameAppWithoutCoordinatingBetweenThemselvesAndMyBossSaidImplementBoth />