It’s great when you can create a completely new world when you’re writing something, because you control all the history.

It’s really annoying when you’re trying to write something in the current “real” universe.  While you can make dragons be real – if invisible to those not in the know – you can’t change the fact that Margaret Cross Norton didn’t head up the Society of American Archivists until 1943.

She did co-found it in 1936. which helps a bit, but it still requires some tweaking of other items…