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Phones are already near-universal and can do sign translation with free apps. Plus audio for blind. AR might either be niche or next universal. Ubiquitous AR in Rainbow’s End mode = deep dematerialization/decarbonization. Net equality/accessibility/sustainability level-up imo.
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Arguably literacy/middle-class and signage created bigger inequality gradient initially until universal schooling. Oral culture went down privileging the literate.
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