An interesting quiz. Curiously on the ones I was confident about I got 3/3 and the ones I thought were a toss-up I got 0/2https://twitter.com/jonatanpallesen/status/1373220950691418114 …
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Is it not just their amount smile that we're clueing in to?
Personally I looked around the eyes to determine - brow ridge, eye shape.
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