Now walking out onto the upper deck to find Minerva sailing steadily eastward on calm seas, Daniel is appalled that anyone ever doubted these matters. The horizon is a perfect line. The sun a red circle tracing a neat path through the sky and proceeding through an orderly series of color changes: red, yellow, white. Thus nature. Minerva, the human world, is a family of curves. There are no straight lines here. The decks are slightly arched, to shed water and supply greater strength. The masts flexed, impelled by the thrust of the sails, but restrained by webs of rigging, curved grids like Isaac’s sundial lines. Of course, wherever wind collects in a sail or water skims around the hull, it follows rules that Bernoulli has set down using the calculus, Leibniz’s version. Minerva is a congregation of Leibniz curves, navigating according to Bernoulli rules, across a vast mostly water-covered sphere whose size, precise shape, trajectory through the heavens and destiny were all laid down by Newton.
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