Casio Fx-9860 • Free & Limited

The fx-9860 didn’t know it was special. It just did its math. But Leo knew.

Instead, the rabbit population would boom, crash, then settle into a perfect repeating cycle of seven distinct states. Every single time. Different initial conditions, same cycle.

Here’s a short story inspired by the graphing calculator. It was 3 a.m., and the fx-9860’s dim green LCD was the only light in the dorm room.