I think of architectural design, physically work and move freely on site while having direct visual and acoustic links available for notes, models, web media, and various sensor recording capabilities for documentation and processing. The extended range of different sensors also plays a critical role in making wearable computers useful I think.
The potential eye strain reduction seems generally significant.
I see an unknown factor in the device weight however, I found wearing AirPods Max for longer stretches pretty unsatisfactory in that regard.
..freely physically *navigate the site.., more precisely
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