Cracks in the two roadway walls are extending to the depth in arc shape and diminish in a power function law.

巷道两帮围岩裂隙呈弧形向巷帮深处扩展，并按幂函数规律衰减；

youdao

If we accept Mr. Taleb's premise about power-law ascendancy, we are left with a troubling question: How do you function in a world where accurate prediction is rarely possible, where history isn't a reliable guide to the future and where the most important events cannot be anticipated?

WSJ: Shattering the Bell Curve