This Year's Model of Humanity

So, one of the discussions going around about 4x05 is that the scene at the end is a ret-con, and this is mostly said with the implication that ret-cons in general are bad things. Personally, I completely disagree with that. I think they’re like anything else in writing - they’re as good as their execution is. Most of us can think of ret-cons that are messy bandaids, but essentially all a ret-con is, is a writer going, “oh, wait, I have a better idea!” and whether or not it works is going to depend on how well the writer weaves it into the story.