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rational

Chalk-drawn silhouette of a human head with gears on a black background, human brain concept

Chalk-drawn silhouette of a human head with gears on a black background, human brain conceptDas Bild Chalk-drawn silhouette of a…

Silhouette of human head with rubik’s cube, concept of mind, thinking and ideas

Silhouette of human head with rubik's cube, concept of mind, thinking and ideasDas Bild Silhouette of human head with rubik's…

Caring for the planet and the environment, the concept of planetary, global ideas

Caring for the planet and the environment, the concept of planetary, global ideasDas Bild Caring for the planet and the…

Great idea, finding solution concept, head silhouette with light bulb on dark background

Great idea, finding solution concept, head silhouette with light bulb on dark backgroundDas Bild Great idea, finding solution concept, head…

Concepts for generating ideas and solutions, multicolored papers in a drawn head silhouette

Concepts for generating ideas and solutions, multicolored papers in a drawn head silhouetteDas Bild Concepts for generating ideas and solutions,…