Yea but isn't the idea of VR fundamentally flawed ? I mean I can imagine how presence feels like magic when you're just sitting still looking around, but is it really possible to move your avatar around without breaking presence ? I mean your body won't feel the centripetal force, nor the tactile sensations so it seems like any movement at all would break the illusion.. and if presence is broken then you might as well just be playing a FPS on a nice monitor.