Final answer:
The specific picture Nico sees on the restaurant wall isn't identified without further context. Art themes such as perspective and viewer interaction are central to discussions about paintings and drawings mentioned in the excerpts.
Step-by-step explanation:
The student's question refers to a picture that Nico sees on the wall in a restaurant. As the question doesn't provide specific details about the text or context, it's impossible to accurately determine whose picture is seen or where the person in the picture is located without further information. However, references to Edward Hopper's Nighthawks or the contemplation of a picture of Philip IV and his wife in a mirror suggest that art, perspective, and the lives depicted within pieces of art are central themes related to the question. The perspective of the people in the paintings or drawings might differ based on their position or how the artist wishes to portray them, while what is missing from the painting might be a direct physical connection between characters or the viewer’s ability to interact with the painted scene.