The central question of this paper is: Can there be an ethical artificial intelligence (AI)? The author lists four possible types of answers that have appeared in the literature: Yes, No, Who Knows?, and Who Cares? He discusses the last answer in detail and sketches brief outlines of answers to the first three. 

The central question of this paper is: Can there be an ethical artificial intelligence (AI)? 

What do I mean when I say: Can AI be ethical? On the face of it this seems like a question with an obvious answer: no. So, at first glance, either that is the answer or it is the case that the question just seems odd to ask in the first place. Of course, AI can not be ethical only people can. There are other possibilities of course. Some say that other categories of beings such as animals (Clark, 1977) and groups (McMahon, 2001) are able to be moral. 

In spite of the seeming common sense (How can my web browser possibly be ethical??) of the above, there is a body of literature that does take the question seriously. In the literature four answers are contemplated: YES, NO, WHO KNOWS?, and WHO CARES?. 
Due to the limited size of this paper I will address this last answer, WHO CARES, in detail and merely sketch an outline of the other answers