@modulux @Edent It's amazing how willing people are to believe things that directly contradict their personal experience. For example, it's incredibly common for fictional characters to state, with no one contradicting them, that people with a single working eye have no depth perception. Yet humans use around half a dozen different cues to detect depth, of which stereo separation is only one. And fully sighed people can test this by covering an eye! Anyone who has reached for something with a pillow over one eye or dressed as a pirate knows that this is nonsense, yet they'll happily nod along when it's stated.

Similarly, even fully sighed people who have used a telephone know that they can communicate effectively without seeing the other person. I don't like it, I do get some useful cues from seeing the person, but nowhere near 55% of the communication. The same people will have seen people talk on mute in video conferences. As them if they'd rather try to get an idea across with the video or audio off in a video call and they'll all agree that turning the video off is fine.