[osobo]

I feel this might need some new form of 3D input to get it right. Our grasp of speech made us lazy: The core of what we want to communicate can be captured in sound and therefore words (and hence you can read and understand this). 'Communicating' with my dog is a multi-cue affair, involving pointed looks, head tilts, specific wags and a lot of emoting. I doubt you could consistently pick all that up from (2D) video alone.

[blooalien]

I remember reading a while back a study (or theory, or SomeJunkLikeThat™) where dolphins (and possibly whales?) may very well communicate with other dolphins directly in 3D via their sonar capabilities, so that right there could be yet another need for 3D input (and output) in a whole different way than might be expected, presuming they hope to use this idea with dolphins and other sonar capable sea mammals. And then you have bees that communicate with each other through complicated "dances". Fun stuff…