Micro expressions are a pain to animate and yet every human we interact with has them pretty much, our brains are very effective in reading them as well since f

Micro expressions are a pain to animate and yet every human we interact with has them pretty much, our brains are very effective in reading them as well since for our ancestors they where literally life and death. Without them I think our brain rings all the alarm bells, a human face without them is odd and possibly threatening.