Let's take a spinning cube as an example. I don't see it "in front of me" or as an overlay on top of my vision (I can do this tho, it's just not the default and

Let's take a spinning cube as an example. I don't see it "in front of me" or as an overlay on top of my vision (I can do this tho, it's just not the default and I have to concentrate to create such an overlay). It's hard to describe, I can just see the cube and as soon as I try to focus on the soundings (to find out if there are any) they start to exist but they don't until I focus on them. Imagine a videogame rendering engine, which only renders things the player is actively looking at, not just the field of view, but just the smallest possible point of focus.