I feel like rendering detail is a red herring, and the whole problem has everything to do with focus. Eyes that don’t track constantly and move appropriately come off as strange, whereas ones that do (or seem to) look alive. I don’t think we observe the level of fine detail that this article implies. If you compare the PS2 game Metal Gear Solid 3 with a carefully rendered modern model that stares blankly forward, you’ll find Metal Gear characters look 1000% more alive.
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