Confidently Incorrect:
This is a running list of times creatives have been so overconfident they understood something they didn't even bother googling it.
(This post is just about the confidently incorrect aspect and has nothing to do with the media itself.)
X-Men Origins: Wolverine (2009), in this movie the script writer is so confident that a Wolverine is a kind of wolf (instead of a weasel) they write the following line.
Kayla Silverfox: "... but Kuekuatsu didn't know that once you leave the Spirit World, you can never go back. And every night, he looks up at the sky, sees the moon and *howls* her name. But... he can never touch her again.
Logan: Wow. Koo-koo-ka-choo got screwed.
Kayla Silverfox: "Kuekuatsu, ... it means the Wolverine."















