Physical Nullification

Four-dimensional technology was difficult to understand to begin with, but the field's depth and breadth kept expanding, making it harder and harder to comprehend.

I can understand it from the perspective of processing techniques.

A mathematician can understand it through theory.

But Hiyori, who was neither an engineer nor a mathematician, struggled to understand it.

The two of us sat down in front of the Vanishing Wand, putting our heads together as we worked to reconcile our understanding of the theory.

I explained while folding a sheet of origami paper cut into a precise square in front of Hiyori.

"Listen. Fold this square sheet so its area becomes one-fourth. First, like this. A normal fold into quarters. You understand, right?"

"Yeah."

"Now I'll show you a different pattern. Fold it like this. It's the same as the intermediate step when folding a crane."

"Yeah."...