Retconning.  Necessary evil or abomination? Much debated by fans, and much maligned, retconning is sometimes necessary, and when done well, an effective story telling device. This week, Scott and the Ragemaster discuss when retconning is, in our opinion, properly used, and examples of when it has been horribly applied to gut the soul of a science fiction franchise. 

Note - please realize I reserve the right to retcon this description to address future criticism of the episode.