Virtual Reality (VR) developer John Carmack is tasked here with explaining what Virtual Reality is at five levels of increasing
complexity, to a 1) Child; 2) Pre-Teen 3) College Student; 4) Grad Student and an 5) Expert; describing what the technology allows us to do today what it may allow us to do in the future – and whether it should even be the goal of human beings to approximate reality with VR.
