#1. Hiccup never went up and specifically measured Gobbers heright

[jusiri]

Listen, what are wells if not one giant window into the ground?

Anyone who has spent any amount of time with the httyd books and/or fandom quickly realizes that there are a lot of mistakes and continuity errors. I personally love it and find it endearing and hilarious so here is a list (ongoing as I continue rereading) of my favorites:

Gobber loses half a foot of height between books 1 and 2

Between books 1 and 2 the pirate training program gains 3 pupils but then proceeds to lose 1 in between books 2 and 3

In book 2 Alvin the Poor but Honest Farmer says he came across Grimbeard the Ghastly's coffin while planting potatoes. However, in book 5 we discover that most vikings believe potatoes (aka the vegetable that no one dares name) are imaginary because they only grow in America which is a land far to the west that they think doesn't exist because the world is as flat as a pancake and if you sail too far in any direction you'll fall of the edge of it.

In book 5 Hiccup visits Old Wrinkly in the bottom of a well because he's taken a vow of silence. Hiccup then apparently hears voices yelling through an open window at the bottom of said well? To my knowledge you can't put windows in wells but ¯\_(ツ)_/¯