Rubin helpfully fills in a lot of blank spaces in what we already knew about this. The one nagging doubt that still lingers sits somewhere between what is doable, versus what is done. The Kinect, for all it's technological triumphs and impressive market performance, still leaves us waiting for whatever it was that made it seem like it was going to change everything. While few who have ever had the Oculus experience have any doubt that it could change everything, we mustn't forget that we are also all still waiting for the first concrete confirmation that this expectation will be met.