for ethics engineering course

Why is it important for engineering students to study engineering ethics? What is "moral autonomy. "the correct response to an ethical problem is very obvious" can you explain this in the case of "PINTO"? "The ethical problems encountered in engineering practice are very complex and involve conflicting ethical principle" can you compare this statement in pinto's case? As an engineer how you will manage your design to satisfy ethical values? What is the difference between law and ethics