I think there's just an obvious law of diminishing returns on certain things. If you double the number of triangles, it doesn't take long to get to a clean loo

I think there's just an obvious law of diminishing returns on certain things. If you double the number of triangles, it doesn't take long to get to a clean looking circle - the next time you double it, it doesn't look that much better unless you're zooming way in on it. So there's two things here, I think: * There are tons of other improvements, like dynamic lighting. This turns into more of an immersion/ realism thing, and less of a "detail" thing. It's weird when your characters shadow doesn't move the way you expect with the light sources, it's weird when one part of the room is totally dark because a block is just slightly in the way of a light source, and the light isn't bouncing around it. * With VR, this will all matter way more. You're going to have people taking objects in the game and putting them right up to their face - suddenly the difference between X triangles and 2X triangles is really noticeable again, relative to a 3rd person view on a monitor that's at least a foot or two away from you, where objects are always at a distance. Immersion is an extremely important factor for VR, so optimizing there makes a lot of sense. So while todays mediums may not demonstrate these wins, they open up possibilities for new mediums.