John Carmack had an interesting take on AR. His feeling is that AR is a more difficult problem to solve, and for artificial objects to blend nicely with realit

John Carmack had an interesting take on AR. His feeling is that AR is a more difficult problem to solve, and for artificial objects to blend nicely with reality you'll probably need to redraw the entire field of vision anyway. By this reasoning, VR is a necessary first step along the way to the development of AR.