Board Thread:False Info and Speculative Discussion/@comment-544940-20150906035111/@comment-4091815-20150907155327

Canon is, as far as this site is concerned, the events that transpire on screen during each episode.

It also takes into account past events as described by characters on the show as well as some of the information relayed via props on the show.

The latter (props) has proven, more often than not, to conflict with prior established canon. When a conflict occurs we make note of it but give precedence to the information provide via dialog as this is more likely to convey the writer's intent than would a prop they did not create themselves.

External comments by writers or creators of the show can inform or expand on the canon as presented on screen. Any such statements must be weighed against the veracity of the on screen canon before a change is made.