/sci/ - Science & Math

>>12516480
To add, human eye is no precision instrument. parallax have to work just good enough for out ancestors to chuck spears at something 20m away not 10km. It is but a part of our visual sensory suite, we rely on all available cues to make sense of the world.

>Close one eye, I don't know how you, but I lose depth perception pretty much completely when I do.
Try this on a mountain or a ship or something further away and see if you could tell the angular difference. At that point you're relying on combination of some other cues to guess the plausible distance.

http://www.hitl.washington.edu/projects/knowledge_base/virtual-worlds/EVE/III.A.1.c.DepthCues.html
https://www.sciencefocus.com/the-human-body/how-small-can-the-naked-eye-see/