Jaron Lanier’s pioneering VR permitted two occupants at once, and the thing I noticed (and everyone else who visited) was that other people in VR were far more interesting than other things. Experimenting again in 2015, I found the best demos of synthetic worlds are ones that trigger a deep presence not with the most pixels per inch, but with the most engagement of other people. To that end, High Fidelity is exploiting a neat trick. Taking advantage of the tracking abilities of cheap sensors, it can mirror the direction of your gaze in both worlds. Not just where you turn your head, but where
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