While watching a boring tech talk, I started paying attention to how the eyes of the presenter was moving, couldn't help but be incredibly impressed at how quickly they snap from one direction to another with instant 100% focus at an exact arbitrary 3D point, at 60hz framerate it looks instantaneous.
When you focus on an object then move and reorient your head quickly, your eyes will perfectly compensate to maintain focus even if the object was moving. We are still far from this level of tech.
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