was "Living Witness" one of the better Voyager's episodes. Yes it was. That however doesn't exempt it from being called out on a Key plot from previous episodes. The fact that they don't have a back-up copy of the EMH. It shows that the writers don't care abount continuity within the show. It could have been avoided very simply by a little fore thought. You have a line(s) of dialouge in previous episodes that amounts to this. Episode X. "I want you two to work on creating a way to back-up the EMH at the end of every day." Episode Y. "We've managed to find a way to back-up the Doctor at the end of each day." Now we don't have to know the ins and outs of how they've managed to do it. But it shows you aren't treating the audiance as the lowest common denominator. It doesn't matter what genre your show is you have to be consistant within the universe you have created. If you say previously there isn't a back-up copy then there isn't a back-up copy unless you address that issue before it becomes a plot element that you need a back-up copy.