What ethical approaches does Mark Twain apply in his short story

What ethical approaches does Mark Twain apply in his short story.

Hadleyburg’s solution to their lack of ethical understanding is to increase the number of ethical conundrums faced. Are there other ways to fix the problem that Hadleyburg represents?

Can we learn ethical behavior without resorting to, or being exposed to, unethical behavior? Can there be good without evil? Can there be ethics without encountering a lack of ethics? Does an innocent child have to lose that innocence in order to act ethically? Is there a place for innocence in the modern world?