human head and question mark |
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navigate by keyword : analysis analyze answer blackboard brain brainpower brainstorm business chalk chalkboard cognitive concept confused confusion creative creativity drawing education function genius head health human ideas innovation inspiration intellect intelligence learning mark memory mental mentality mind problem question rational reasoning science sketch smart solve solving success thinking thought unknown |
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A chalk sketch on a blackboard of a human head and question mark that represents thoughts and ideas, problems, and confusion. For use as any science theme or consideration of how humans think |
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