In 15th-century Germany, Johannes Gutenberg developed a printing press, a machine that allowed for mass production of texts. It is considered by many to be one of the most significant technological advancements of the last millennium.Though Gutenberg often receives credit as the inventor of the printing press, sometime earlier, roughly 5,000 miles away, Koreans had already developed a movable-type printing press.There is no question that East Asians were first. There is also no question that Gutenberg's invention in Europe had a far greater impact."What is not known is whether Gutenberg knew about the Korean printing or not. And if we...