You somehow magically sense something there through your eyes, but you don’t see it at all. It’s stronger if you don’t look at it directly and move your head about a little. It’s like there’s an unconscious observer reporting where things are, and you just take the info and acknowledge it, but you don’t see it. Anyone else get this?
Yeah, we have more senses than vision that help us understand where things are. Also memory.
In the dark, we’re probably moving slowly and staying highly attuned to all non-visual input…but it’s always there to help us.