“Go ahead,” says Baba, “try it.”

Malki props the quarter under one finger and flicks it along the top of the desk. Before it’s even completed one revolution, it simply stops and stands on edge.

“Impossible,” she murmurs.

Baba nods grimly. “It took years of backbreaking labwork, but we did it. This is the only place on Earth truly free of spin.”

“But that’s just it! The planet has to impart some angular momentum, like in toilet bowls, what’s it–Coriolis force?”

“Nope.” Baba crosses his arms and smiles. “As long as we’re in this zone, the world is completely flat.”