Robin is like Goodman Brown because he undergoes a night of initiation, but Robin's initiation is to the city whereas Brown's is to a black sabbath. Both are young men of limited experience, neither smart nor wise. Brown ends up sadder. Literature, like life, tends to be complex. Two good and careful readers might interpret a story quite differently, each arguing convincingly, each argument perfectly consistent with the text.
Stories raise questions more frequently than they give answers.
And there are no answers in the back of the book. We are all hungry for the truth, but some truths are easier to determine than others. The true area of a rectangle can be determined by multiplying the length by the width. The truth of a story is not so exact. Neither is life that exact or precise.