I don’t know where the idea of Vikings having horns on their helmets came from, but it’s a brilliant one. In every possible way, other than the literal truth, they totally had horns on their helmets. Horned helmets was absolutely their vibe and I feel we all have a right to that deeper artistic truth. They had limited technology and manufacturing helmets was pretty tricky for them, I imagine, so putting horns on them wouldn’t have been workable, and wouldn’t have increased the functionality of the helmets, but I swear they’d have given it a go if they’d thought of it.