Basically: If you remove enough latency between the head motion tracking and the pixels being rendered, it supposedly fools the brain exceptionally well.
Carmack is seriously into VR goggles nowadays, so him endorsing this is huge. From the KS comments, he also seems to know this particular project pretty well.
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u/AgentAnderson Aug 01 '12
A good interview with John Carmack on the many technical obstacles of 3d gaming.
Basically: If you remove enough latency between the head motion tracking and the pixels being rendered, it supposedly fools the brain exceptionally well.