Prompt
"Create a realistic portrait of Robert Tarjan, a middle-aged American computer scientist, sitting in front of a computer screen with a thoughtful expression, wearing a pair of glasses and a collared shirt, with a subtle background hinting at his academic and professional affiliations, such as Princeton University or Stanford University, and a few visual references to his notable contributions, like a whiteboard with some algorithmic diagrams or a computer screen displaying a data structure representation."
