After looking at the list of categories found on the left hand side of this site a question came to me. What subject if any has been either vaguely or not at all covered in the field of philosophy? Is there any possibility for a breakthrough in some uncovered field that doesn't follow from some previous philosopher's argument or have all subjects relevant to philosophy been already covered? If there is no such subject, or it is just too abstract to consider what has not been considered, could you please point out some of the Cutting Edge or "hot topics" that are currently setting the philosophy world ablaze. Thank you for any consideration.