New questions have been raised and new questioners have come along, so there are plenty of new topics for philosophical scrutiny. Is the "impossible" girl really impossible? Is there anything wrong with an inter-species lesbian relationship (the kids weren't quite ready for that in 1963, but no one blinks an eye in 2015)? Can it really be right for the Doctor to lie and to selectively forget? We even have two authors who have figured out how to build a TARDIS -- instructions included!
An added feature of this awesome new volume is that the editors have reached out to insiders of Who fandom, people who run hugely successful Who conventions, play in Who-inspired bands, and run wildly popular podcasts and websites, to share their privileged insights into why the Doctor is so philosophically deep.