I read that whole thread. Brandiwyn🎶 does a great job of describing things, but I wanted to add one more thing, Shaye .

Normality is also where we can introduce things that are normal to the main characters but not normal in our world. This is your chance to explain that grass is blue on this world, or that mermaids are alive and well but all the other fantasy creatures aren't, or that the character's mother calls every single day at 4pm whether your character likes it or not.

Normal isn't about brushing your teeth, unless you don't. Normal is about setting up this character so the reader understands when things take a turn. We understood Harry to be a boy that got picked on at home and at school and he didn't relish either prospect. Then the door opened to the wizarding world, and everything about his life changed. Not all books have that exact sort of reveal, but it gives us a great way to look at it. Even just the part about Vernon seeing owls in the beginning was off, and that became something that brought everyone to wait and see what was next.