I went to Edinburgh a few months ago, and the walking-tour guide explained it: There USED to be unicorns, but they didn't want to get into the ark. Noah threatened them, but they were too stubborn and didn't want to listen to authority. Noah warned them that big rain was coming, but they weren't afraid of it. They went extinct during the flood. Centuries later, Scotland chose the unicorn as its symbol because it's the animal that most represents the attitude of Scottish people: stubborn, resistant to authority, and accustomed to being rained on every day.
That's part of the game, seeing how many folds you can get. Binary wiping.After 4 folds, there's not enough surface area left, but there is a stiff corner that can be used for digging.