科研中，理论就是这样起步的！这是观察中聚焦出来的一个现象，一个 measure，上升到概念就是 decision complexity or decision-maker stress，再往上可升华成理论。Of course, no measure is perfect, nor is any theory. But the beauty of this pizza index is that it is empirically observable (high transparency), easy to obtain, and hard to refute (in the absence of stress, who would order large quantities of pizza where the usual cafeteria continues to serve routine food?)
