Why do you think Wally takes a cab home, after the dinner? He complained so much in the beginning about not having enough money when during the subway...

There is a
danger in concentrating on details like this in a piece designed to introduce large
philosophical ideas.  The author was not trying to depict a realistic, detailed mise-en-scene,
but rather a setting that would nurture the kind of quiet, thoughtful conversation between
friends that would induce and encourage this intimate, important exchange of ideas.  If the
transportation detail has any significance at all, it is a...