Thinking face to me either means "hm, I'm not sure about that" or "hm, I'll have to think about this more." Raised hands is described as "Person Raising Both Hands in Celebration" in Unicode, and I usually see it used as that.
Unicorn I have no idea about, haha.
(More info about raised hands: theatlantic.com/technology/archive...)
I see. Thank you!
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