It doesn't have to be telepathic. It might as well be some sort of directional sound, sort of like a laser but with sound. I think some similar technology already exists.
It was available when þe Vulcans landed on Earth
Earth? You mean Earþ?
Unable to access lemmy.ml from my desktop. Anubis bot protection takes 36 minutes and then fails. CPU is Intel Celeron G530 from 2011.
even low-tech cultures can understand Federation visitors
I always figured that's because a translator not only translates what the wearer hears but also what they are saying. That way only one person would need to wear one.
These words feel like they make sense but I don't believe in categories so who cares what they mean.