Gutenberg Did Not Invent Movable Type
A Korean monk was printing with movable metal type at least 78 years before Gutenberg pressed his first Bible page.
Around 1040 CE, a Chinese commoner named Bi Sheng pressed individual characters into wet clay, fired them, and set them into an iron frame filled with resin. He had invented movable type. Bi Sheng's method spread across East Asia over the following two centuries, where artisans improved it by casting individual characters in bronze.
By 1234, Korean metalworkers were printing official government texts using cast metal type — a technology documented in the court records of the Goryeo dynasty. The oldest surviving book printed with metal movable type is the Jikji, a Korean Buddhist anthology printed in 1377 at the Heungdeok Temple in Cheongju. That is 78 years before Gutenberg completed his Bible.
What Gutenberg actually invented — or more precisely, assembled — was a system: a mechanical press adapted from wine and olive presses, an oil-based ink that adhered to metal, a standardized alloy (lead, tin, antimony) for casting durable type, and a distribution network for selling books. None of these individual components was original. The genius was integrating them into a production process that could print 300 pages per day, compared to the 40 or so a scribe could copy.
The confusion persists partly because Gutenberg's innovation spread, and partly because European historians were the ones writing the history. The Jikji spent centuries in obscurity until a French diplomat found it in Seoul in 1886 and shipped it to Paris, where it remains today in the Bibliothèque nationale de France.
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