a man writing on a white board with a pen

Prompt 1: a man wearing glasses who is writing on a white board. he is pointing at different diagrams and writing on the board while talking. seems to be focused on the man's work and the diagrams on the board.

Prompt 2: a man sitting in front of a whiteboard while talking to the camera. he points to different parts of the board while explaining them. the man then proceeds to write on the board while still talking to the camera. seems to be a tutorial or a demonstration of some sort, with the man providing information or instructions related to the board. the man's gestures and body language suggest that he is passionate and knowledgeable about the subject he is discussing. overall, provides a clear and concise explanation of the topic being discussed.