Why did Shaw not mention the real name of the flower girl, the bystander, the gentleman and the mother in Act One?? Please i really need the answer

Let's reverse
the question and ask rather why should he?  If the identity of the characters and their
relationship to one another had been revealed in a kind of third person onmiscient point of
view, the story line would have lost its anticipation, and therefore, a lot of its
interest.

By gradually "unravelling" the truth about the
characters, their interpersonal...