Not to tell people that bethesda can do what they want because it's their story and that books written earlier (such as immortal blood) are invalid because they get in the way of sparkly vampires. How would you feel if All the Nords weren't actualy people but rather khajit wearing fancy clothes.Or if skyrim became a hot desert for every subsequent Tes game. Or if the Jedi didn't have the force. Or if 2+2=4.481 . None of the lore in question negatively effects gameplay and most require either different dialogue or new books. Stuff like " Vampires use bats as part of illusion magic" is much better than "vampires have bats because we watched a movie and the vampires had bats and we thought that you would think it was cool because reasons." and things like "elder scroll makes sun go dark" are stupid whilst using an elder scroll to change the speed of the moons in such a way that they are always eclipsing the sun might be very clever. I still don't know how to justify the Purple flamed zombie horse.