In Ali Smith’s Spring (2019), as a train glides from England into Scotland and the characters neither see a border nor notice any difference in the landscape, a twelve-year-old girl proposes a redefinition of the border: ‘What if, the girl says. Instead of saying, this border divides these places. We said, this border unites these places. This border holds together these two really interesting different places. What if we declared border crossings places where, listen, when you crossed them, you...