How do farmers also have their fields plowed so straight for so far? Do they use GPS guidance somehow? And if they use some sort of tech, were they able to plow fields this straight back in the day?
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Geometry tells us that any two points can be connected by a straight line. One way to mark this on a piece of lans is to put stakes into the ground where you want the ends of the row to be, then tie string to the stakes and stretch it tight. The string will form a straight line, which you can use to guide your plow.
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