It would be tempting to talk about a certain space, but naw, let's focus on something instead. I could probably cite our misinterpretation of the rules from waaaay back when I was young. We thought that Armor Class was a number you had to roll when you rolled below your Dexterity with a d20. And that to score double damage or a critical, you roll below the listed AC number. Yep, we used to think rolling a natural twenty was a BAD thing.