If humans never had ears or hearing and were all deaf and maybe with no voice boxes, what would it be like?
Here are things I can think of:
No ear infections
Lots of written materials in something like Signwriting for the signed languages of the world, which would be the majority of languages at least
Telegraph encoding the symbols for written signs
Quicker development of electronic visual formats
Treatment of sound as something invisible to measure mainly with instruments, like how we treat radio waves and magnetic fields in the real world
Music being geared for feeling it, so it would lack high pitches and have more infrasound
Lots of work on integration of the bass music and visual effects
No need for sign language interpreters unless you want to translate between different sign languages
Different computer systems for typing, maybe more like what they use to type Chinese and Signwriting
No oralists
