What if everyone lost their voice for a day?

I am working Sunday afternoon to cover a shift of a Trainer who has lost his voice and now I am thinking: What would it be like if everyone lost their voice for a day? I suppose it would be more typing, but to the ears, the day would be one of sweet music. I am thinking most talking is utterly unnecessary. People talk not to inform others but to seen talking. Most talk is hot air. Witness the U.S. presidential debates.