While they are virtual, the elements — earth, air, fire, and water — are as important in unreality as in reality. Those virtual elements must themselves be augmented with technologies to replace ordinary sense perception: spatial positioning, object detection, distance perception and more. Combine all of this and you have an operating system to emulate reality in unreality.
Apple is building it.
AR is everywhere at WWDC22
WWDC 2022 didn’t see Apple make any mention of the augmented reality (AR) glasses we all think it is working on.