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Those kinda exist already. Even Realities G2s, for example: no cameras, built in subtitles and live translation and navigation on a discrete minimal display, open source SDK. Expensive and not quite mature, but that’s a perfectly defensible device to be wearing IMO (they do have microphones. So does your phone)

People say that dream states don’t do well with text or numbers in particular.

I’ve read in lucid dreaming communities that trying to read the time on a clock, or small text (and failing to do so), is how some people manage to realize they’re in a dream as a first step to taking control.