Final answer:
Based on the stage directions, Robert likely has a detached or calm demeanor as he continues his crossword puzzle without looking up, even when suggesting to call an ambulance.
Step-by-step explanation:
The question asks us to make an assumption about a character named Robert based on the stage directions given in an excerpt from a play.
From the stage directions, we can infer that Robert continues to engage with his crossword puzzle and does not look up, suggesting a level of detachment or calmness in the face of a situation where someone is evidently hurt and in need of an ambulance. This behavior indicates that the character Robert may have a pragmatic, composed demeanor, or could also suggest a lack of empathy depending on the context of the play.