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Small-Scale Question Sunday for November 20, 2022

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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Is there any neuro/psychological significance to habitual and unaffected non-symmetrical facial expressions? I don't mean stroke symptoms, I mean things like smirks instead of smiles, single eyebrow raises, sneers, head tilts etc.

Asking because it occured to me that I find it an engaging and attractive characteristic while on the other hand finding symmetrical expressions more open and genuine, or at least less nuanced. Wondering if there's something like a left brain right brain factor or if it's just learned behaviour and unconscious imitation.

I'm not sure there are any examples of a non deliberate use of asymmetrical facial expression aside from tics. It always implies one is consciously putting on a face.