A New Relativity

“Tian’er! Look, these are two parallel lines. They’ll never intersect, understand?” Yan Moran drew two lines on the paper and wrote those words beside them. Ruan Tiantian smiled. She picked up two strips of paper that had already been cut and laid them parallel on the table. “These are two parallel lines too! But...” As she spoke, she quickly twisted the two strips together and set them in front of Yan Moran. “Aren’t they one line now?” Yan Moran stared blankly, not noticing that Ruan Tiantian had already come to stand beside him. “Yan Moran! Think this through!”