Comment by rajnathani

> Splitting information across multiple depths is harmful, because your eyes need to re-verge (and, we wish, re-focus). > It may be worse in VR, because you have to fight the lack of actual focus change. With varifocal we would be back to just the badness of the real world, but no better. This is fundamental to the way humans work.

This point on the eye focus changes caused while viewing 3D interfaces (as opposed to 2D interfaces) is a very well-founded one.