We’ll never know if my guess is right, but the pages that have been written about pumps, laid side-by-side, would probably go to the moon and back. After all, only 2.75 billion 11-inch-tall pages would be needed to go that distance. On the other hand, if we counted the people who know all about pumps, we would see zero instead of any real number. But instead of pondering useless estimates and statistics, we might simply assess the “state…
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