Pretty much what the first two are talking about here is more analogous to the placement of a camera in a movie, looking at one or more characters in a scene, with the view of the camera being perceived more from the perspective of a movie audience than it is from the perspective of the characters in that movie. This is why I specified the view from the VR goggles in particular, since that’s a different thing: you’re seeing it from the eyeballs of a particular character in the movie instead.
To illustrate what I was driving at… one thing I distinctly remember from when I was 5 years old was sitting on the toilet, and staring over at the little rug that was placed next to the bathtub towards the end opposite from me. (The toilet was right next to one end of the tub and was facing towards the wall at the opposite end of the tub.) That little rug had Yosemite Sam on it, and was fairly close to the wall over there. I remember how far away from me that rug seemed to be, since I was looking outward ACROSS the floor at it. And in fact, the whole bathroom seemed quite large across to me.
I live in the same house today, and while we’ve replaced the tub, toilet and sink in there, the layout of everything is still the same… but now that bathroom seems so much smaller, and in fact maybe a little cramped, now that I’m long since a grownup. On of the things that surprises me a little bit is that, when I’m sitting on the toilet now, is that the spot where that little rug was (the rug itself is actually long gone) is now right where my FEET sit, and the wall that was past the end of that rug is now close enough I can touch it… but when I was 5 that wall, and in fact the little rug, was well out of my reach and seemed to be far away from me.
Consider the movie “Fantastic Voyage.” In that movie, you see a submarine with a crew in it progressively shrunk down to microscopic size. The way they portrayed that, among other ways, was to show the room the sub was in become progressively larger and larger while the sub itself showed on screen as the same size (in relation to the screen, that is), while at other points showing the room as the same size as before (in relation to the screen that is) while we saw the sub getting progressively smaller and smaller until it shrank from view and could essentially be picked up with a pair of tweezers.
Now, imagine I was today standing in the tub, and was being hit with a shrink-ray like the one in that movie, and I’m being progressively reduced down until I’m back to the size of a 5 year old again. As this happens, I’m not only seeing the edge of the tub rising up taller until it’s a ways past my knees when standing, I’m also seeing the other end of the tub receding farther and farther away from me.
This is the effect I’m talking about. Can this sort of thing be simulated by merely moving the created left eye and right eye view closer and closer to each other? Would that be all it takes to have the end of the tub seem to recede markedly farther and farther away from me? Somehow I doubt it, but it would be interesting to see if that was ALL it took.