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“…a bizarre Internet phenomenon: an “immersive” online experience—part mystery, part game, part who knows what—known as both the Incunabula Papers and Ong’s Hat. The Incunabula Papers/Ong’s Hat was, or is, a “many-threaded, open-ended interactive narrative” that ”weds an alternate history of chaos science and consciousness studies to conspiracy theories, parallel dimensions, and claims that computer-mediated environments can serve as magical tools…. the documents provoked a widespread “immersive legend-trip” in the late 1990s. Via Web forums, participants investigated the documents—manifestos—which spun up descriptions of brilliant but suppressed discoveries relating to paths that certain scientists had forged into alternate realities. Soon, those haunted dimensions existed in the minds and fantasies of Ong’s Hat’s many participants. That was evident as they responded to the original postings by uploading their own—all manner of reflections and artifacts: personal anecdotes, audio recordings, and videos—to augment what became “a really immersive world, and it was vast”.

Ong's Hat Audio