Micronesia: Stone Money and the Last Ocean Navigators
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The island of Yap in the Federated States of Micronesia uses rai — stone discs carved from limestone quarried on Palau, transported by canoe across open ocean, and displayed in village spaces as a form of currency — as one of history's most unusual monetary systems. The largest rai are four metres in diameter and weigh four tons. They are never physically moved in transactions — everyone simply knows who owns what. The value of a rai is partly its size and partly the difficulty of the canoe voyage that brought it from Palau, encoded in oral history. A rai that sank to the ocean floor during transport but was acknowledged by witnesses is still considered valid currency. The concept anticipated aspects of digital currency by centuries.
Micronesian traditional navigation — the ability to cross thousands of kilometres of open Pacific Ocean in outrigger canoes without instruments, using only wave patterns, stars, bird behaviour, and cloud formations above islands — is one of humanity's greatest practical achievements. The knowledge was nearly lost during the 20th century. It has been painstakingly revived, most famously through the work of the Polynesian Voyaging Society and its Micronesian equivalents, who relearned the art through a combination of elder knowledge and experimental voyaging.
The Federated States of Micronesia comprises four island states — Yap, Chuuk, Pohnpei, and Kosrae — spread across 2.7 million square kilometres of the western Pacific, each with a distinct language and culture. The total land area is less than 700 square kilometres. The ocean that surrounds them is the country.
