Thousands of years ago, the oceans seemed a lot wider, even unnavigable. | T housands of years ago, the oceans seemed a lot wider, even unnavigable. Before mariners developed tried-and-true navigation techniques, sailing the seas involved a lot of guesswork — or, if you want it to sound cooler, "dead reckoning." Slowly, our ancestors moved beyond their initial stabs in the dark. Some looked to the sky, using their new knowledge about the cosmos to help them better understand life on Earth. Others took a keen interest in the seas, learning to intuitively navigate the vast expanses based on their currents and swells. |
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